2024 г.

1. Ilievska, I., Ivanova, V., Dechev, D., Ivanov, N., Ormanova, M., Nikolova, M., Handzhiyski, Y., Andreeva, A., Valkov, S., Apostolova, M. Influence of Thickness on the Structure and Biological Response of Cu-O Coatings Deposited on cpTi. Coatings, 14, 2024, 455. Линк:

2. Kaisheva, D., Kotlarski, G., Ormanova, M., Anchev, A., Dunchev, V., Stoyanov, B., Valkov, S. Electron Beam Welding of Copper and Aluminum Alloy with Magnetron Sputtered Titanium Filler. Crystals, 14, 9, 2024, 752. Линк:

3. Kaisheva, D., Dunchev, V., Anchev, A., Stoyanov, B., Ormanova, M., Atanasova, M., Todorov, V. Effect of the beam oscillation on the structure and mechanical properties of electron beam welded joints of Ti6Al4V and Al6082-T6 alloys Journal of Physics: Conference Series, 2710, 2024, 012005. Линк:

4. Kotlarski, G., Ivanov, N., Dechev, D., Valkov, S., Mateev, V., Marinova, I. Structure and impedance of TiN coated 304L SS substrates. Journal of Physics: Conference Series, 2710, 2024, 012004. Линк:

5. Kotlarski, G., Kaisheva, D., Ormanova, M., Stoyanov, B., Dunchev, V., Anchev, A., Valkov, S. Improved Joint Formation and Ductility during Electron-Beam Welding of Ti6Al4V and Al6082-T6 Dissimilar Alloys. Crystals, 14, 2024, 373. Линк:

6. Kotlarski, G., Kaisheva, D., Anchev, A., Ormanova, M., Stoyanov, B., Dunchev, V., Valkov, S. Electron-Beam Welding of Titanium and Ti6Al4V Using Magnetron-Sputtered Nb, V, and Cu Fillers. Metals, 14, 2024, 417. Линк:

7. Kotlarski, G., Ormanova, M., Nikitin, A., Morozova, Iu., Ossenbrink, R., Michailov, V., Doynov, N., Valkov, S. Microstructural and Mechanical Properties of CAP-WAAM Single-Track Al5356 Specimens of Differing Scale. Machines, 12, 1, 2024, 72. Линк:

8. Kotlarski, G., Ormanova, M., Nikitin, A., Morozova, Iu., Ossenbrink, R., Michailov, V., Doynov, N., Valkov, S. Structure Formation and Mechanical Properties of Wire Arc Additively Manufactured Al4043 (AlSi5) Components. Metals, 2, 14, 2024, 183. Линк:

9. Ormanova, M., Kotlarski, G., Dechev, D., Ivanov, N., Stoyanov, B., Valkov, S. Duplex Surface Modification of M2 High-Speed Steel. Coatings, 14, 2024, 798. Линк:

10. Ormanova, M., Kotlarski, G., Kaisheva, D., Nikitin, A., Ossenbrink, R., Doynov, N., Valkov, S., Michailov, V. Investigation of the thermal gradients formed during the process of cooling of WAAM built Al99.7 specimen. Journal of Physics: Conference Series, 2710, 2024, 012038. Линк:

11. Valkov, S., Kotlarski, G., Parshorov, S., Ormanova, M., Stoyanov, B., Padikova, F., Parshorov, I. Effect of Electron Beam Surface Modification on the Plasticity of Inconel Alloy 625. Coatings, 14, 3, 2024, 268. Линк:

12. Dichev, D., Diakov, D., Zhelezarov, I., Valkov, S., Ormanova, M., Dicheva, R., Kupriyanov, O. A Method for Correction of Dynamic Errors When Measuring Flat Surfaces. Sensors, 24, 2024, 5154. Линк:

13. Nikolova, M., Ilievska, I., Handzhiyski, Y., Ivanova, V., Apostolova, M. Characterization and Antibacterial activity of co-sputtered Cu-doped TiO2 coatings deposited on Ti6Al4V alloy. Journal of Physics: Conference Series, 2710, 2024, 012020 Линк:

14. Nikolova, M., Tzvetkov, I., Dimitrova, T., Ivanova. V., Handzhiyski, Y., Andreeva, A., Valkov, S., Ormanova, M., Apostolova, M. Effect of Co-Sputtered Copper and Titanium Oxide Coatings on Bacterial Resistance and Cytocompatibility of Osteoblast Cells. Nanomaterials, 14, 2024, 1148. Линк:

15. Petrov, N., Ormanova, M., Zhelezarov, I., POROSITY DISTRIBUTION AND MICROHARDNESS OF A COLD ARC PULSE™ WIRE ARC ADDITIVELY MANUFACTURED AlSix MECHANICAL PLATE. Journal of the Technical University of Gabrovo, 68, 2024, ISSN:1310-6686, 1-7

16. Rabadzhiyska, S., Dechev, D., Ivanov. N., Ivanova. T., Strijkova, V., Katrova, V., Rupetsov, V., Dimcheva, N., Valkov, S. Wear and Corrosion Resistance of ZrN Coatings Deposited on Ti6Al4V Alloy for Biomedical Applications Coatings, 14, 2024, 1434., Линк:

17. Parshorov, S., Valkov, S., Ormanova, M., Parshorov, I. High Damping Related to Anelasticity of Beryllium Bronze International Journal "NDT Days", 7, 2, 2024, 62-66. Линк:

18. Parshorov, S., Valkov, S., Ormanova, M., Parshorov, I. High Damping Related to Micro-Plasticity in Beryllium Bronze International Journal "NDT Days", 7, 3, 2024, 105-110. Линк:

19. Stoyanov, B., Ormanova, M., Valkov, S., Anchev, A., Dunchev, V., Kaisheva, D., Kotlarski, G. Technologies for electro beam welding of copper and aluminum alloy Proceedings of the International Scientifiv Conference UNITECH'2024, Selected papers, 2024, Technical University of Gabrovo, 2024, 144-149. Линк:

2023 г.

1. Dimov D. A, Stankova N., Karaivanova D., Karashanova D., Georgieva B., Avramova I., Petrov M., Valcheva E., Avdeev G., Ivanov K., Milenov T. Modification of microcrystaline graphites by pulsed laser ablation in a flow mode suspension Journal of Physics: Conference Series 2487, 2023, 012010 https://iopscience.iop.org/article/10.1088/1742-6596/2487/1/012010/pdf Линк:

2. Kaisheva, D., Dunchev, V., Kotlarski, G., Stoyanov, B., Ormanova, M., Todorov, V., Atanasova, M., Valkov, S. Structure and mechanical properties of Cu/Al6082T6 joints produced by welding with scanning electron beam Journal of the Technical University of Gabrovo, 66, 2023, 46-49 http://izvestia.tugab.bg/index.php?m=20&tom=24 Линк:

3. Kaisheva, D., Stoyanov, B., Dunchev, V., Kotlarski, G., Ormanova, M., Valkov, S. Welding of titanium and aluminum alloys using oscillating electron beam and niobium filler Proceedings of Unitech 2023, 2, 2023, 363-367.

4. Kotlarski, G., Ivanov, N., Dechev, D., Ormanova, M., Valkov, S., Mateev, V., Marinova, I. Influence of magnetron sputtered TiN and VN coatings on the electrical impedance of aluminium electrodes Comptes rendus de l'Acadйmie bulgare des Sciences, 76, 9, 2023, 1335-1342 https://www.proceedings.bas.bg/index.php/cr/article/view/379 Линк:

5. Kotlarski, G., Kaisheva, D., Ormanova, M., Stoyanov, B., Dunchev, V., Anchev, A., Valkov, S. Electron-Beam Welding of Titanium and Ti6Al4V Alloy Metals, 13, 6, 2023, 1065 https://www.mdpi.com/2075-4701/13/6/1065 Линк:

6. Kotlarski, G., Ormanova, M., Valkov, S., Andreeva, A., Bezdushnyi, R., Mateev, V., Marinova, I., Petrov, P. Influence of Transition Metal-Nitride Thin Films on the Electrical Contact Resistance of Copper Substrates Journal of Physics: Conference Series, 2487, 2023, 012033. https://iopscience.iop.org/article/10.1088/1742-6596/2487/1/012033 Линк:

7. Kotlarski, G., Ormanova, M., Nikitin, A., Ossenbrink, R., Doynov, N., Valkov, S., Michailov, V. Structure, morphology and hardness a WAAM built Al99.7 specimen Proceedings of Unitech 2023, 2, 2023, 349-353.

8. Nikolay Tyutyundzhiev, Hristo Nitchev, Christo Angelov, Todor Arsov, Konstantin Lovchinov, Asen Mutafov Variation of UV-A/UV-B daily profiles depending on locations and altitude Journal of Physics: Conference Series 2436, 2023, 012008. https://iopscience.iop.org/article/10.1088/1742-6596/2436/1/012008/meta Линк:

9. Ormanova, M., Kotlarski, G., Stoyanov, B., Valkov, S. Surface modification of Ti6Al4V alloy by continuous electron beam Journal of Physics: Conference Series 2487, 2023, 012037. https://iopscience.iop.org/article/10.1088/1742-6596/2487/1/012037 Линк:

10. Ormanova, M., Stoyanov, B., Nedyalkov, N., Valkov, S. Impact of Beam Deflection Geometry on the Surface Architecture and Mechanical Properties of Electron-Beam-Modified TC4 Titanium Alloy Materials 16, 2023, 5237. https://www.mdpi.com/1996-1944/16/15/5237 Линк:

11. Padikova, F., Nedeva, D., Dunchev, V., Stoyanov, B., Ormanova, M., Nedyalkov, N., Valkov, S. Fabrication and Characterization of Titanium Borides by Electron Beam Surface Alloying Coatings 13(11), 2023, 1941. https://www.mdpi.com/2079-6412/13/11/1941 Линк:

12. Petrov, M., Slavov, L., Stankulov, T., Karamanova, B., Milenov, T., Dimov, D., Avramova, I. Transforming Chimney Soot via Stochastic Polymerization for Active Electrode Coating Coatings 13(8), 2023, 1354. https://www.mdpi.com/2079-6412/13/8/1354 Линк:

13. Rabadzhiyska, S., Kotlarski, G., Valkov, S., Ormanova, M., Strijkova, V., Dimcheva, N., Shipochka, M., Petrov, P. Study of diamond - like carbon coatings for biomedical applications produced by electron-beam physical vapor deposition AIP Conference Proceedings 2803, 2023, 040014. https://doi.org/10.1063/5.0143804 Линк:

14. Valkov, S., Nedeva, D., Dunchev, V., Padikova, F., Ormanova, M., Stoyanov, B., Nedyalkov, N. Fabrication and Characterization of Ti/TiC Composite Layers by an Electron-Beam Surface Modification Coatings 13, 2023, 951. https://www.mdpi.com/2079-6412/13/5/951 Линк:

15. Anchev, A., Kaisheva, D., Kotlarski, G., Dunchev, V., Stoyanov, B., Ormanova, M., Atanasova, M., Todorov, V., Daskalova, P., Valkov, S. Welding of Ti6Al4V and Al6082-T6 Alloys by a Scanning Electron Beam Metals, 13, 2023, 1252. https://www.mdpi.com/2075-4701/13/7/1252 Линк:

16. Dichev, D., Zhelezarov, I., Anastasov, K., Dicheva, K., Kupriyanov, O., Malakov, I., Nikolova, H., Ormanova, M., Petrov, N. Increasing the Accuracy of Making Threaded Gauges Based on Statistical Methods 2023 XXXIII International Scientific Symposium Metrology and Metrology Assurance (MMA), IEEE, 2023. https://ieeexplore.ieee.org/document/10317905 Линк:

17. Dichev, D., Zhelezarov. I., Diakov, D., Dicheva, R., Kupriyanov, O., Malakov, I., Anastasov, K., Valkov, S., Petrov, N. Mathematical Model for Increasing Accuracy when Measuring Linear Quantities in Conditions of External Mechanical Impacts 2023 XXXIII International Scientific Symposium Metrology and Metrology Assurance (MMA), IEEE, 2023. https://ieeexplore.ieee.org/document/10317908 Линк:

18. Lovchinov K., Alexsieva G., Petrov M., Gergova R., Tyutyundziev N., Lazarova K., Babeva T. Influence of deposition temperature and time on structural and gas sensing properties of electrochemically deposited ZrO2 layers Materials Science and Engineering: B 297, 2023, 116793. https://www.sciencedirect.com/science/article/pii/S0921510723005354 Линк:

19. Parshorov, S., Valkov, S., Ormanova, M., Gurov, S., Parshorov, I. Dynamic Relaxation Spectra in Berillium Bronze International Journal "NDT Days", 6, 4, 2023, 190-193. https://www.bg-s-ndt.org/journal/vol6/JNDTD-v6-n4-a02.pdf Линк:

20. Parshorov, S., Valkov, S., Ormanova, M., Gurov, S., Parshorov, I. Dynamic Relaxation Spectra in High Damping Mn-Cu Alloys International Journal "NDT Days", 6, 3, 2023, 131-136. https://www.bg-s-ndt.org/journal/vol6/JNDTD-v6-n3-a02.pdf Линк:

21. Parshorov, S., Valkov, S., Ormanova, M., Gurov, S., Parshorov, I. On the nature of the resonance relaxation maximum in high damping alloys. Engineering Sciences, 2, 2023, 11-19.

22. Petrov N, Tsvetkov Ts, Tyutyundzhiev N, Semkov ?, Mishev ?, Shirov G, Zinkova Y, Mutafov A, Nichev H, Petrov M, Angelov H, Arsov T, Serafimov N, Georgiev G. New Research Project: Ground-Based Monitoring of Cosmic Particles and Space Weather Proceedings of the Fifteenth Workshop "Solar Influences on the Magnetosphere, Ionosphere and Atmosphere" June 2023, 120-124. ISSN: 2367-7570. https://spaceclimate.bas.bg/ws-sozopol/pdf/Proceedings2023.pdf Линк:

23. Недева Д., Падикова Ф., Котларски Г., Методи за обработка на материали базирани на интензивни енергийни потоци Proceedings of Unitech 2023, 2, 2023, 333-338.

2022 г.

1. Kaisheva, D., Kotlarski, G., Stoyanov, B., Dunchev, V., Ormanova, M., Valkov, S. Electron beam welding of dissimilar metals and alloys Proceedings of Unitech 2022, 2, 2022, 367-372 https://unitech2022.tugab.bg/images/c2022/che/p69.pdf Линк:

2. Kaisheva, D., Anchev, A., Valkov, S., Dunchev, V., Kotlarski, G., Stoyanov, B., Ormanova, M., Atanasova, M., Petrov, P. Influence of Beam Power on Structures and Mechanical Characteristics of Electron-Beam-Welded Joints of Copper and Stainless Steel Metals, 12 (5), MDPI, 2022, 737. https://www.mdpi.com/2075-4701/12/5/737 Линк:

3. Kaisheva, D., Anchev, A., Dunchev, V., Kotlarski, G., Stoyanov, B., Ormanova, M., Valkov, S. Electron-Beam Welding Cu and Al6082T6 Aluminum Alloys with Circular Beam Oscillations Crystals, 12, 12, MDPI, 2022, 1757. JCR-IF (Web of Science):2.67 Q2 (Web of Science) https://www.mdpi.com/2073-4352/12/12/1757 Линк:

4. Kaisheva, D., Anchev, A., Dunchev, V., Stoyanov, B., Valkov, S., Ormanova, M., Kotlarski, G., Todorov, V., Atanasova, M., Petrov, P. Welding of copper and 304L stainless steel with continuous electron beam Bulgarian Chemical Communications, 54, Special Issue B2, 2022, ISSN:0324-1130, 78-81.

5. Kaisheva, D., Anchev, A., Dunchev, V., Stoyanov, B., Valkov, S., Ormanova, M., Kotlarski, G., Todorov, V., Atanasova, M., Rabadzhiyska, S., Petrov, P. Study of the structure and mechanical properties of electron-beam-welded dissimilar joints of copper and stainless steel with and without offset Journal of Physics: Conference Series, 2240, 2022, 012006. https://iopscience.iop.org/article/10.1088/1742-6596/2240/1/012006 Линк:

6. Kotlarski, G., Ormanova, M., Ossenbrink, R., Nikitin, A., Doynov, N., Valkov, S., Michailov, V. Fabrication and Characterization of Wire Arc Additively Manufactured AlSi5 Structures Metals, 12, MDPI, 2022, DOI:10.3390/met12111870, 1870. https://www.mdpi.com/2075-4701/12/11/1870/htm Линк:

7. Ormanova, M., Dechev, D., Ivanov, N., Mihai, G., Gospodinov, M., Valkov, S., Enachescu, M. Synthesis and Characterization of Ti-Ta-Shape Memory Surface Alloys Formed by the Electron-Beam Additive Technique Coatings, 12, 5, MDPI, 2022, 678. https://www.mdpi.com/2079-6412/12/5/678 Линк:

8. Ormanova, M., Kotlarski, G., Valkov, S., Dechev, D., Ivanov, N., Petrov, P. Formation and characterization of CuO coatings deposited by reactive magnetron sputtering Journal of Physics: Conference Series, 2240, 2022, 012010. https://iopscience.iop.org/article/10.1088/1742-6596/2240/1/012010 Линк:

9. Ormanova, M., Kotlarski, G., Bezdushnyi, R., Ivanov, N., Dechev, D., Valkov, S. Structure of Ti-Ta alloys fabricated by electron-beam surface alloying Comptes rendus de l'Acad?mie bulgare des, 75, 9, 2022, ISSN:2367-5535, DOI:https://doi.org/10.7546/CRABS.2022.09.04, 1279-1286. https://proceedings.bas.bg/index.php/cr/article/view/168 Линк 1: Линк 2:

10. Rabadzhiyska, S., Kotlarski, G., Valkov, S., Ormanova, M., Shipochka, M., Petrov, P. Electron-beam physical vapor deposition of diamond-like carbon coatings on Si substrates AIP Conference Proceedings, 2449, 2022, ISSN:1551-7616, 060009. https://aip.scitation.org/doi/abs/10.1063/5.0094838 Линк:

11. Rabadzhiyska, S., Kotlarski, G., Valkov, S., Ormanova, M., Shipochka, M., Rafailov, P., Petrov, P. Characterization of Diamond-like carbon films produced by electron- beam physical vapor deposition Materials Today: Proceedings, 2022, ISSN:2214-7853, https://www.sciencedirect.com/science/article/pii/S2214785322055663?via%3Dihub Линк:

12. Rabadzhiyska, S., Kotlarski, G., Shipochka, M., Rafailov, P., Ormanova, M., Strijkova, V., Dimcheva, N., Valkov, S. Duplex Surface Modification of 304-L SS Substrates by an Electron-Beam Treatment and Subsequent Deposition of Diamond-like Carbon Coatings Coatings, 12, MDPI, 2022, 401. https://www.mdpi.com/2079-6412/12/3/401 Линк:

13. Rabadzhiyska, S., Ormanova, M., Valkov, S., Dechev, D., Terziyska, P., Petrov, P. Study of the structure, roughness and optical properties of HfO2 coatings deposited on microscopic glass substrates Journal of Physics: Conference Series, 2240, 2022, 012011. https://iopscience.iop.org/article/10.1088/1742-6596/2240/1/012011 Линк:

14. Valkov, S., Ormanova, M., Ivanov, N., Dechev, D., Bezdushnyi, R., Petrov, P. Duplex surface modification of tool steel - deposition of a WN film and subsequent electron-beam modification Journal of Physics: Conference Series, 2240, 2022, 012043. https://iopscience.iop.org/article/10.1088/1742-6596/2240/1/012043 Линк:

15. Alexsieva, G, Lovchinov, K, Petrov,M, Gergova, R, Tyutyundzhiev, N. Influence of Al Doping on the Morphological, Structural and Gas Sensing Properties of Electrochemically Deposited ZnO Films on Quartz Resonators. 12, 1, MDPI, 2022, ISSN:20796412, DOI:10.3390/coatings12010081.

16. Valkov, S., Ormanova, M., Ivanov, N., Dechev, D., Bezdushnyi, R., Petrov, P.Fabien Kunis, Konstantin Ilchev, Milena Stoyanova, Vesela Dimova, Tsanislava Genova, Stefan Valkov, Christina Andreeva Improving the students' learning of optics and atomic and molecular physics by computer-assisted school experiments Proceedings of the International Scientific Conference UniTech 2022, UNIVERSITY PUBLISHING HOUSE "V. APRILOV" - GABROVO, 2022, ISSN:1313-230X, 256-260 Национално академично издателство https://unitech2022.tugab.bg/images/c2022/edu/p71.pdf Линк:

17. Ivalina Avramova, Dimitar Dimov, Nadya Stankova, Miroslav Petrov, Desislava Karaivanova, Georgi Avdeev, Stoyan Russev, Daniela Karashanova, Bilyana Georgieva, Evgeniya Valcheva, Teodor Milenov Novel approach for synthesis of graphene-like phases by pulsed laser ablation in a flow mode suspension Materials, 15, 22, MDPI, 2022, DOI:https://doi.org/10.3390/ma15227870, 7870-1-7870-14, https://www.mdpi.com/1996-1944/15/22/7870 Линк 1: Линк 2:

2021 г.

1. Valkov, S., Dechev, D., Ivanov, N, Bezdushnyi, R., Ormanova, M., Petrov, P. Influence of Beam Power on Young's Modulus and Friction Coefficient of Ti-Ta Alloys Formed by Electron-Beam Surface Alloying Metals, 11, 8, 2021, DOI:doi.org/10.3390/met11081246, 1246. JCR-IF (Web of Science):2.351 https://www.mdpi.com/2075-4701/11/8/1246 Линк:

2. Kaisheva, D., Bokuchava, G., Papushkin, I., Valkov, S., Ormanova, M., Petrov, P. COMPARATIVE NEUTRON DIFFRACTION STUDY OF RESIDUAL STRESSES, ARISING AFTER ELECTRON BEAM WELDING OF VARIOUS STEELS Journal of the Technical University of Gabrovo, 63, 2021, 72-75 http://izvestia.tugab.bg/index.php?m=20&tom=21 Линк:

3. Nikolova, M., Ormanova, M., Nikolova, V., Apostolova, M. Electrochemical, Tribological and Biocompatible Performance of Electron Beam Modified and Coated Ti6Al4V Alloy International Journal of Molecular Sciences, 22, 12, 2021, 6369. JCR-IF (Web of Science):4.556 https://www.mdpi.com/1422-0067/22/12/6369 Линк:

4. Ormanova, M., Kotlarski, G., Dechev, D., Valkov, S., Ivanov, N., Petrov, P. CRYSTALLOGRAPHY OF COOPER OXIDE COATINGS DEPOSITED ON SI SUBSTRATE BY REACTIVE MAGNETRON SPUTTERING Journal of the Technical University of Gabrovo, 63, 2021, 81-83 http://izvestia.tugab.bg/index.php?m=20&tom=21 Линк:

5. Valkov, S., Kotlarski, G., Ormanova, M., Doynov, N., Ossenbring, R., Petrov, P., Michailov, V. Crystallography and Mechanical Properties of Wire Arc Additively Manufactured Al5356 Components Comptes rendus de l'Acad?emie bulgare des Sciences, 74, 6, 2021, DOI:DOI: 10.7546/CRABS.2021.06.03, 820-827. http://www.proceedings.bas.bg/index.php/cr Линк:

6. Lovchinov, K, Alexieva, G, Georgieva, B, Petrov, M, Gergova, R, Tzoukrovsky, Y, Tyutyundzhiev, N. "Study of the sensitivity of ZrO and ZnO layers electrochemically deposited on a quartz resonator", IOP Conf. Series: Journal of Physics: Conf. Series, 1762, Journal of Physics: Conf. Series, 2021, DOI:https://doi.org/10.1088/1742-6596/1762/1/012033, 012033. https://iopscience.iop.org/article/10.1088/1742-6596/1762/1/012033 Линк 1: Линк 2:

7. Tyutyundzhiev, N., Angelov, Ch., Arsov, T, Lovchinov, K., Nitchev, Hr., Alexieva, G. Development of Cost-efficient Wireless Network for Solar UV Irradiation Monitoring in Bulgaria Journal of Physics: Conference Series, 1762, 012040, 2021, ISSN:1742-6596, DOI:DOI:doi:10.1088/1742-6596/1762/1/012040, 1-8. https://iopscience.iop.org/journal/1742-6596 Линк:

8. Kotlarski, G., Valkov, S., Andreeva, A., Mateev, I., Marinova, I., Petrov, P. Electrical contact resistance of tungsten coatings deposited on Cu and Al conductors Journal of Physics: Conference Series, 1859, 2021, 012063.

9. Ormanova, M., Valkov S., Petrov, P. Influence of the electron beam parameters on the structure and properties of electron beam surface treated Ti6Al4V alloy Proceedings of 6th International Electron Beam Welding Conference, 2021, ISBN:978-3-96144-133-4, 46-49.

10. Rabadzhiyska, S., Ormanova, M., Valkov, S., Ivanov, N., Terziyska, P., Ivanov, K., Petrov, P. Study optical properties of the thin HfO2 coatings deposited by DC reactive magnetron sputtering Journal of Physics: Conference Series, 1859, 2021, 012066.

11. Valkov, S., Ormanova, M., Bezdushnyi, R., Petrov, P. Electron-beam surface alloying of Ti substrates with Ta films IOP Conference Series: Materials Science and Engineering, 1056, 2021, DOI:doi:10.1088/1757-899X/1056/1/012006, 012006.

12. Valkov, S., Petrov, P. Improvement of the surface properties of light metals by electron beam additive technique Proceedings of 6th International Electron Beam Welding Conference, 2021, ISBN:978-3-96144-133-4, 40-45.

13. Valkov, S., Parshorov, S., Andreeva, A., Rabadzhiyska, S., Nikolova, M., Bezdushnyi, R., Petrov, P. Influence of beam power on the surface architecture and corrosion behavior of electron-beam treated Co-Cr-Mo alloys Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 494-495, 2021, DOI:https://doi.org/10.1016/j.nimb.2021.03.007, 46-52. Линк:

14. Donkov, N., Zykova, A., Safonov, V., Dudin, S., Yakovin, S., Petrov, P., Rabadzhiyska, S. Structural and mechanical properties of Ta-based coatings deposited on polymers for biomedical applications IOP Conference Series: Materials Science and Engineering, 1056, 2021, DOI:doi:10.1088/1757-899X/1056/1/012011, 012011.

15. Valkov, S., Parshorov, S., Andreeva, A., Nikolova, M., Petrov, P. Surface modification of Co-Cr-Mo alloys by electron-beam treatment IOP Conference Series: Materials Science and Engineering, 1056, 2021, DOI:doi:10.1088/1757-899X/1056/1/012008, 012008.

16. Petrov, M., Lovchinov, K., Slavov, L., Hikov, T., Tyutyundzhiev, N. Electrochemically-stabilized carbon materials for supercapacitor prototypes Journal of Physics: Conference Series, 1859, IOP Publishing Ltd., 2021, ISSN:1742-6588, DOI:doi:10.1088/1742-6596/1859/1/012065, 012065.

17. Petrov, M., Lovchinov, K., Slavov, L., Stankulov, T., Nitchev, H., Hikov, T., Tyutyundzhiev, N. Thermally Stabilized Soot for Supercapacitors Physica status solidi (a), WILEY-V C H VERLAG GMBH, 2021, ISSN:1862-6300, DOI:https://doi.org/10.1002/pssa.202000617, 2000617. Линк:

18. Nikolova, M., Ormanova, M., Tonev, D., Petrov, P. Roughness and mechanical properties of electron-beam surface modified and TiN/TiO2-coated Ti6Al4V alloy IOP Conference Series: Materials Science and Engineering, 1056, 2021, DOI:doi:10.1088/1757-899X/1056/1/012007, 012007.

2020 г.

1. Petrov, M., Lovchinov, K., Valkov, S., Tyutyundzhiev, N. Soot as electrode coating for supercapacitor prototypes Journal of Physics: Conference Series, 1492, 2020, 012043. SJR (Scopus):0.23

2. Valkov, S., Ormanova, M., Petrov, P. Electron-Beam Surface Treatment of Metals and Alloys: Techniques and Trends Metals, 10, 9, 2020, DOI:https://doi.org/10.3390/met10091219, 1219. JCR-IF (Web of Science):2.117 Линк:

3. Parshorov, S., Valkov, S., Petrov. P. Martensitic transformations in Fe-Mn alloy with low stacking fault energy IOP Conf. Series: Materials Science and Engineering, 878, 2020, DOI:doi:10.1088/1757-899X/878/1/012052, 012052. SJR (Scopus):0.2

4. Tongov, M., Hikov, T., Angelov, I., Petrov, P. Measuring the diameter of electron beam by rotating slit disc IOP Conf. Series: Materials Science and Engineering, 878, 2020, DOI:doi:10.1088/1757-899X/878/1/012053, 012053. SJR (Scopus):0.2

5. Anestiev, L., Lazarova, R., Petrov, P., Dyakova, V., Stanev, L. On the strengthening and the strength reducing mechanisms at aluminium matrix composites reinforced with nano-sized TiCN particulates Journal Philosophical Magazine Part A: Materials Science, 2020, DOI:http://doi.org/10.1080/14786435.2020.1821114, JCR-IF (Web of Science):1.778 Линк:

6. Hikov, T., Nikolova, M., Petrov, P. Effect of TiN/TiO2 multilayer coatings on the properties of stainless steel for biomedical applications Journal of Physics: Conference Series, 1, 1492, 2020, 012029.

7. Kaisheva, D., Petrov, P., Bokuchava, G., Papushkin, I. Study of residual stresses in electron beam welded constructive steel via neutron diffraction method Bulgarian Chemical Communications, 52, Issue A, 2020, 129-133 .

8. N Tyutyundzhiev, Ch Angelov, K Lovchinov, Hr Nitchev, T Arsov, A Mutafov. Comparative measurements of solar UV irradiation at the high-mountain stations of BEO-Moussala (BG) and NAORozhen (BG) Journal of Physics: Conference Series, 1492, 2020, DOI:DOI:doi:10.1088/1742-6596/1492/1/012044, 1-6. SJR (Scopus):0.211

9. Kaisheva, D., Bokuchava, G., Papushkin, I., Petrov, P. NEUTRON DIFFRACTION MEASUREMENT OF RESIDUAL STRESSES IN ELECTRON BEAM WELDED LOW CARBON STEEL Comptes rendus de l'Académie bulgare des Sciences, 73, 4, 2020, DOI:DOI:10.7546/CRABS.2020.04.05, 475-484.

10. Ormanova, M., Nikolova, M., Angelov, V., Petrov, P. Investigation of the microstructure and the thermal processes in a Ti6Al4V alloy surface-modified by scanning electron beam Journal of Physics: Conference Series, 1, 1492, 2020, 012065.

11. Petrov, P., Tongov, M. Numerical modelling of heat source during electron beam welding Vacuum, 171, 108991, 2020, ISSN:0042-207X.

12. Petrov, P., Tongov, M. Study of the cathode emissivity in generators for electron beam systems Optik - International Journal for Light and Electron Optics, 209, 2020, 164358.

13. Rabadzhiyska, S., Ormanova, M., Ivanov, N., Petrov, P. Effect of the inert/reactive gases ratio and bias voltage on the tribological properties of VN coatings Journal of Physics: Conference Series, 1, 1492, 2020, 012062.

14. Valkov, S., Petrov, P. Formation and characterization of Al-Hf alloys by selective electron-beam surface alloying Journal of Physics: Conference Series, 1, 1492, 2020, 012042.

15. Bokuchava, G., Petrov, P. Study of Residual Stresses and Microstructural Changes in Charpy Test Specimens Reconstituted by Various Welding Techniques Metals, 10, 632, 2020, ISSN:2075-4701, DOI:doi:10.3390/met10050632.

16. Petrov, P., Tongov, M., Ormanova, M., Valkov, S. Study of the processes in the electrostatic part of the electron-beam generator Comptes rendus de l'Académie bulgare des Sciences, 73, 9, 2020, ISSN:1310-1331, DOI:DOI:10.7546/CRABS.2020.09.05, 1225-1228. JCR-IF (Web of Science):0.343 Q2

17. Kolev, M., Valkov, S., Lazarova, R., Petrov, P., Dimitrova, R., Dyakova, V. Tribological properties of aluminium reinforced by TiCN nanosized powder Journal of Physics: Conference Series, 1, 1492, 2020, 012066.

18. Lazarova, R., Valkov, S., Dyakova, V., Petrov, P. Layers obtained on TiCN aluminum nanocomposites by electron-beam treatment IOP Conference Series: Materials Science and Engineering, 1, 733, 2020, 012017.

19. Lovchinov K., Marinov G, Petrov M, Tyutyundzhiev N, Alexieva G, Babeva T. Influence of deposition temperature on the structural and optical properties of electrochemically nanostructured ZnO films Comptes rendus de l'Académie bulgare des Sciences, 73, 2, BAS, 2020, SJR (Scopus):0.218 Q2

20. Lovchinov, K., Nitchev, H, Petrov, M., Stoykov, R., Tyutyundzhiev, N. Simulation and modelling of small solar thermal plant Measurement, 162, 2020, 107944.

21. Nikolova, M., Valkov, S., Yankov, E., Petrov, P. Composition, structure and adhesion of cathodic-arc and glow-discharge deposited TiN/TiO2 coatings: A case study Journal of Physics: Conference Series, 1, 1492, 2020, 012037.

22. Nikolova, M., Nikolova, V., Ivanova, V., Valkov, S., Petrov, P., Apostolova, M. Mechanical properties and in vitro biocompatibility evaluation of TiN/TiO2 coated Ti6Al4V alloy Materials Today: Proceedings, 2020, DOI:doi.org/10.1016/j.matpr.2020.05.051, SJR (Scopus):0.304 Линк:

23. Parshorov, S., Petrov, P., Valkov, S. Investigation of the Micro-Structural Parameters of Iron Alloys International Journal "NDT Days", 3, 4, 2020, ISSN:2603-4018, 200-204

24. Parshorov, S., Machev, E., Petrov, P., Valkov, S. Martensitic Transformations in High Alloy Fe-Ni Alloys International Journal "NDT Days", 3, 4, 2020, ISSN:2603-4018, 191-195

25. Parshorov, S., Machev, E., Petrov, P., Valkov, S. Phase Composition and Microstructure of Fe-12% Mn and Fe-20% Ni Alloy after Hot Plastic Deformation International Journal "NDT Days", 3, 4, 2020, ISSN:2603-4018, 196-199

2019 г.

1. Hikov, T., Krasteva, N., Hristova-Panusheva, K., Ivanov, N., Petrov, P. Study on the biocompatibility of TiN/TiO2 bilayer coatings deposited by DC magnetron sputtering on stainless steel AIP Conference Proceedings, 2075, 2019, DOI:https://doi.org/10.1063/1.5091349, 160022. SJR (Scopus):0.165 Линк:

2. Kaisheva, D., Angelov, V., Petrov, P. Simulation of heat transfer at welding with oscillating electron beam Canadian Journal of Physics, 97, 10, 2019, DOI:https://doi.org/10.1139/cjp-2018-0495, 1140-1146. ISI IF:1.016 Линк:

3. Kaisheva, D., Bokuchava, G., Papushkin, I., Genchev, G., Doynov, N., Ossenbrink, R., Michailov, V., Petrov, P. Determination of residual stresses in fiber laser welded stainless steel joints by neutron diffraction method Proceedings of SPIE - The International Society for Optical Engineering, 11047, 110470H, 2019, ISBN:978-151062768-0, ISSN:0277786X, DOI:10.1117/12.2516421, SJR:0.234

4. Kaisheva, D., Papushkin, I., Bokuchava, G., Petrov, P. Study of residual stresses in electron beam welded samples of an aluminum alloy via neutron diffraction method AIP Conference Proceedings, 2075, 2019, DOI:10.1036/1.5091340, 160013-1-160013-5. SJR (Scopus):0.165

5. Tyutyundzhiev, N., Petrov, M., Lovchinov, K., Nichev, H., Angelov, H., Petrov, P. Development of low-cost technology to obtain carbon based supercapacitors Journal of Physics: Conference Series, 1186, 2019, 012033. SJR (Scopus):0.24

6. Valkov, S., Bezdushnyi, R., Lazarova, R., Dimitrova, R., Petrov, P. Surface modification of Al substrate with TiCN nanopowder by electron-beam treatment AIP Conference Proceedings, 2075, 2019, DOI:https://doi.org/10.1063/1.5091344, 160017. SJR(Scopus):0.165 Линк:

7. Valkov, S., Parshorov, S., Andreeva, A., Bezdushnyi, R., Nikolova, M., Dechev, D., Ivanov, N., Petrov, P. Influence of Electron Beam Treatment of Co-Cr Alloy on the Growing Mechanism, Surface Topography, and Mechanical Properties of Deposited TiN/TiO2 Coatings Coatings, 9, 513, 2019, DOI:doi:10.3390/coatings9080513, JCR-IF (Web of Science):2.33

8. Angelov, V., Ormanova, M., Kaisheva. D., Lazarova, R., Dimitrova, R., Petrov, P. Selective electron beam surface alloying of aluminum with TiCN nanoparticles Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 440, 2019, ISSN:0168-583X, DOI:https://doi.org/10.1016/j.nimb.2018.12.007, 88-94. SJR:0.558, ISI IF:1.323 Линк:

9. Nikolova, M., Valkov, S., Iosub, R., Yankov, E., Petrov, P. Electrochemical impedance spectroscopy of complex titanium nitride coating with thin surface oxide film deposited on pure titanium Romanian Journal of Materials, 49, 1, 2019, 42-50. JCR-IF (Web of Science):0.661

10. Nikolova, M., Valkov, S., Parshorov, S., Yankov, E., Petrov, P. Biomineralization of Titanium Alloy with Surface Micro- and Nanoscaled Modifications Key Engineering Materials, 813, 2019, DOI:10.4028/www.scientific.net/KEM.813.165, 165-170. SJR (Scopus):0.18 Линк:

11. Nikolova, M., Nikolov, V., Valkov, S., Yankov, E., Zaharieva, V., Petrov, P. Ethylene Oxide Sterilization of TiN/TiO2 Coated Titanium Implant Material Key Engineering Materials, 813, 2019, DOI:10.4028/www.scientific.net/KEM.813.165, 178-184. SJR (Scopus):0.18 Линк:

12. Parshorov, S., Petrov, P., Valkov, S., Lazarova, R., Dimitrova, R. Kinetics of deformation martensite formation in TRIP/transformation induced plasticity/steels AIP Conference Proceedings, 2075, 2019, DOI:https://doi.org/10.1063/1.5091354, 160027. SJR (Scopus):0.165 Линк:

13. Parshorov, S., Petrov, P., Valkov, S. Non isothermal martensite transformations in TRIP/transformation induced plasticity/steels AIP Conference Proceedings, 2075, 2019, DOI:https://doi.org/10.1063/1.5091353, 160026. SJR:0.165 Линк:

2018 г.

1. Petrov, P., Dechev, D., Ivanov, N., Hikov, T., Valkov, S., Nikolova, M.P., Yankov, E., Parshorov, S., Bezdushnyi, R., Andreeva, A. Study of the influence of electron beam treatment of Ti5Al4V substrate on the mechanical properties and surface topography of multilayer TiN/TiO2 coatings Vacuum, 154, 2018, ISSN:0042-207X, DOI:https://doi.org/10.1016/j.vacuum.2018.05.026, 264-271. ISI IF:2.067 Линк:

2. Petrov, P., Kaisheva. D., Bokuchava, G., Papushkin, I. Study of residual stresses during electron beam welding of alloyed steels using neutron diffraction Bulgarian Chemical Communication, 50, Special Issue B, 2018, ISSN:0324-1130, 85-90. ISI IF:0.238

3. Valkov, S., Ormanova, M., Petrov, P. Surface Manufacturing of Materials by High Energy Fluxes Advanced Surface Engineering Research, IntechOpen, 2018, ISBN:978-1-78984-340-8, DOI:DOI: 10.5772/intechopen.79874, 19, 69-87

4. Valkov, S., Bezdushnyi, R., Petrov, P. Study of the influence of vanadium and niobium on the microstructure and crystallographic structure of Ti-Al-V and Ti-Al-Nb alloys formed by selective electron beam alloying Journal of Physics: Conference Series, 992, 012053, 2018, DOI:doi :10.1088/1742-6596/992/1/012053, SJR:0.24

5. Valkov, S., Bezdushnyi, R., Petrov, P. Synthesis, structure and mechanical properties of Ti-Al-Nb coatings formed by electron beam additive technique Vacuum, 156, 2018, ISSN:0042-207X, DOI:https://doi.org/10.1016/j.vacuum.2018.07.021, 140-145. ISI IF:2.067 Линк:

6. Valkov, S., Neov, D., Bezdushnyi, R., Beskrovnyi, A., Kozlenko, D., Petrov, P. Study of the micro-structure, crystallographic structure and thermal stability of Al-Ti-Nb alloys produced by selective electron beam alloying Journal of Surface Investigation, X-ray, Synchrotron and Neutron Techniques, 12, 3, 2018, ISSN:1027-4510, DOI:https://doi.org/10.1134/S1027451018030187, 436-441. ISI IF:0.359 Линк:

7. Valkov, S., Nikolova, M., Yankov, E., Hikov, T., Bezdushnyi, R., Dechev, D., Ivanov, N., Petrov, P. Comparison of the Phase Composition and Nanohardness of Gradient TiN/TiO2 Coatings on Ti5Al4V Alloy Deposited by Different PVD Methods IOP Conf. Series: Materials Science and Engineering, 416, 2018, 012034. SJR:0.201

8. Bokuchava, G., Petrov, P., Genchev, G., Michailov, V., Doynov, N., Ossenbrink, R. Residual Stress Analysis in Welded Joints by Neutron Diffraction and Computer Modeling Romanian Journal of Physics, 63, 7-8, 2018, ISSN:1221-146X, 904-921. ISI IF:1.433

9. Kolev, M., Dimitrova, R., Parshorov, S., Valkov, S., Lazarova, R., Petrov, P. Surface modification of an aluminum alloy by electron beam introducing TiCN nanoparticles Journal of Physics: Conference Series, 992, 012042, 2018, DOI:https://doi.org/10.1088/1742-6596/992/1/012042, SJR:0.24 Линк:

10. Lazarova, R., Dimitrova, R., Murdjeva, Y., Valkov, S., Petrov, P. Layers obtained on aluminum by nanopowder deposition and subsequent electron beam scanning Materials and Manufacturing Processes, 33, 10, 2018, ISSN:1532-2475, DOI:https://doi.org/10.1080/10426914.2018.1453148, 1128-1132. ISI IF:2.669 Линк:

11. Nikolova, M., Yankov, E., Hikov, T., Dechev, D., Ivanov, N., Parshorov, S., Zaharieva, V., Petrov, P. Comparison of the Corrosion Behaviour of Differently Deposited PVD TiN/TiO2 Coatings on Electron Beam Modified Ti5Al4V Alloy IOP Conf. Series: Materials Science and Engineering, 416, 2018, ISSN:1757-899X, 012058. SJR:0.201

12. Nikolova, M., Yankov, E., Nikolov, D., Tonev, D., Zaharieva, V., Ormanova, M., Valkov, S., Hikov, T., Petrov, P. Influence of the Chemical Composition, Structure and Heat Treatment on the Topography and Mechanical Properties of Ti5Al4V and Ti6Al4V after Electron Beam Surface Treatment IOP Conf. Series: Materials Science and Engineering, 416, 2018, ISSN:1757-899X, 012031. SJR:0.201

13. Nikolova, M.P., Genov, A., Valkov, S., Yankov, E., Dechev, D., Ivanov, N., Bezdushnyi, R., Petrov, P. Application of TiN/TiO2 coatings on stainless steel: composition and mechanical reliability Journal of Physics: Conference Series, 992, 012032, 2018, DOI:https://doi.org/10.1088/1742-6596/992/1/012032, SJR:0.24 Линк:

14. Nikolova, M.P., Yankov, E., Petrov, P., Valkov, S., Ormanova, M., Zaharieva, V., Tonev, D., Andreeva, A. Electron beam surface modification of Ti5Al4V alloy for biomedical applications Proceedings of METAL 2017 - 26th International Conference on Metallurgy and Materials, 2018, ISBN:978-80-87294-79-6, 1555-1560

15. Nikolova, M.P., Yankov, E., Petrov, P., Nikolov, D., Valkov, S., Zaharieva, V., Ormanova, M. Phase and mechanical changes of Ti5AL4V alloy after heat treatment in vacuum Proceedings of METAL 2017 - 26th International Conference on Metallurgy and Materials, 2018, ISBN:978-80-87294-79-6, 1899-1904

16. Papushkin, I., Kaisheva. D., Bokuchava, G., Angelov, V., Petrov, P. Study of residual stresses in CT test specimens welded by electron beam Journal of Physics: Conference Series, 992, 012016, 2018, DOI:https://doi.org/10.1088/1742-6596/992/1/012016, SJR:0.24 Линк:

17. Yankov, E., Nikolova, M., Dechev, D., Ivanov. N., Hikov, T., Valkov, S., Dimitrova, V., Yordanov, M., Petrov, P. Changes in the Mechanical Properties of Ti Samples with ТiN and TiN/TiO2 Coatings Deposited by Different PVD Methods IOP Conf. Series: Materials Science and Engineering, 416, 2018, ISSN:1757-899X, 012062. SJR:0.201

18. Yankov, E., Nikolova, M.P., Petrov, P., Zaharieva, V., Valkov, S., Ormanova, M. Influence of the combined vacuum heat treatment and electron beam surface modification on the elastic-plastic behavior of Ti5Al4V alloy Proceedings of METAL 2017 - 26th International Conference on Metallurgy and Materials, 2018, ISBN:978-80-87294-79-6, 1549-1554

2017 г.

1. Ormanova, M., Petrov, P., Kovacheva, D. Electron beam surface treatment of tool steels Vacuum, 135, 2017, ISSN:0042-207X, DOI:http://dx.doi.org/10.1016/j.vacuum.2016.10.022, 7-12. SJR:0.572, ISI IF:1.558 Линк:

2. Ormanova, M, Dechev, D., Bezdushnyi, R., Petrov, P. Phase composition of multilayer system TiN/CrN deposited by DC magnetron sputtering Bulgarian Chemical Communication, 49, special issue A, 2017, ISSN:0324-1130, 98-102. ISI IF:0.229

3. Petrov, P., Bokuchava, G., Papushkin, I., Genchev, G., Michailov, V., Ormanova, M. Neutron diffraction studies of laser welding residual stresses Proceedings of SPIE, 10226, 2017, DOI:doi: 10.1117/12.2261802, SJR:0.37

4. Valkov, S., Petrov, P., Dechev, D., Ivanov, N., Bezdushnyi, R. Study formation of aluminides in Al-Ti-X (X = Zr, Hf) systems induced by electron-beam surface treatment Proceedings of 4th International Electron Beam Welding Conference, 2017, 16-20

5. Valkov, S., Petrov, P., Lazarova, R. Comparative study of electron and laser beam surface alloying Proceedings of SPIE, 10226, 2017, DOI:10.1117/12.2262352, SJR:0.37

6. Bodnarchuk, V. I, Petrov, P., Kozlenko, D. P., Dechev, D., Ivanov, N., Martev, I., Kasatkin, I. A. Study into the properties of Ti|N/WN multilayer nanocoatings prepared via magnetron sputtering Springer, 11, 1, Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques, 2017, ISSN:1027-4510, DOI:10.1134/S1027451017010244, 186-189. ISI IF:0.36

7. Genchev, G., Doynov, N., Ossenbrink, R., Michailov, V., Bokuchava, G., Petrov, P. Residual stresses formation in multi-pass weldment: A numerical and experimental study Journal of Constructional Steel Research, 138, 2017, ISSN:0143-974X, DOI:https://doi.org/10.1016/j.jcsr.2017.08.017, 633-641. ISI IF:2.028 Линк: