Aerospace Technic and Technology

The subject matter of this study is the process of measuring the product surface temperature using a pyrometric method during the deposition of vacuum-arc coatings, as well as the application of the obtained results to control the coating deposition process. The aim of this work is to improve the stability, accuracy, and reproducibility of product surface temperature measurements for effective control of the coating deposition process. The objectives of the study are to develop an algorithm for monitoring the product surface temperature during coating deposition and to determine the design conditions for planetary gear trains that ensure the product positioning exactly at the temperature measurement point after each full revolution. The methods used in this research include analytical approaches and design methods for planetary gear trains that satisfy the specified requirements. The following results were obtained. Based on an analysis of existing methods for measuring the product surface temperature during coating deposition, the main disadvantages of each method were identified. The pyrometric method was determined to be the most suitable, as it allows accurate measurement of the product surface temperature once the contamination of the pyrometer's input window is resolved. An operational algorithm for the proposed pyrometric temperature measurement system for monitoring the product surface temperature was developed. The application of this algorithm during the deposition of vacuum-arc coatings at various processing stages improves coating quality. When implemented, the algorithm ensures the stability, accuracy, and reproducibility of temperature measurement results by protecting the pyrometer optics from condensation of cathode erosion products. This is achieved by switching off the plasma source, stopping the rotation of the products in the vacuum chamber, and performing the temperature measurement after a delay following the plasma source's shutdown. The temperature measurement process is carried out at each stage of vacuum-arc coating deposition, including ion cleaning and coating deposition. Temperature monitoring allows timely completion of the ion cleaning process without tempering the product material. During the coating deposition stage, it enables maintaining the product temperature at a specified level by adjusting the applied voltage. These measures help achieve high-quality coatings. Conditions were developed that make it possible to obtain a simple planetary gear train (-type) in which the planets perform an integer number of revolutions per one revolution of the carrier. A sequence for the optimal kinematic and geometric synthesis of such mechanisms was also developed for their subsequent application in technological processes of vacuum-arc coating deposition. An example of the calculation of such a planetary gear train for the “Bulat-6” installation is presented. Conclusions. The scientific novelty of the results obtained is as follows: an algorithm for monitoring the surface temperature of workpieces during coating deposition has been developed within the proposed temperature measurement system, which incorporates a specially designed planetary gear train. This ensures precise positioning of the workpiece at the temperature measurement point and enables control of the vacuum-arc coating process based on temperature monitoring results, thereby contributing to the improvement of the quality of the resulting coatings.

vacuum-arc coatings; pyrometric method; temperature measurement system; temperature measurement point; process control based on temperature monitoring results; planetary gear train

Andreev, A. A., Sablev, L. P., & Grigorev, S. N. Vakumno-dugovye pokrytiya [Vacuum-arc coatings]. Kharkiv: NNTs KhF-TI, 2010. 318 p.

Muhammed, M., Javidani, M., Sadrabadi, T. E., Heidari, M., Levasseur, T., & Jahazi, M. A Comprehensive Review of Cathodic Arc Evaporation Physical Vapour Deposition (CAE-PVD) Coatings for Enhanced Tribological Performance. Coatings, 2024, vol. 14, iss. 3, article no. 246. DOI: 10.3390/coatings14030246

Kanyuka, V. I., Terekhov, V. N., & Moroz, A. N. Spravochnik po instrumentalnym stalyam [Handbook of tool steels]. Ed. by Yu. F. Ternovyi. Kharkiv: Metallika, 2008. 224 p.

Gerashchenko, O. A., Gordov, A. N., Lakh, V. I. et al. Temperaturnye izmereniya: spravochnik [Temperature measurements: handbook]. Ed. by O. A. Gerashchenko. Kyiv: Naukova dumka, 1984. 494 p.

Childs, P. R. N. Practical Temperature Measurement. Oxford, Butterworth-Heinemann, 2001. 372 p.

Michalski, L., Eckersdorf, K., Kucharski, J., & McGhee, J. Temperature Measurement. Chichester: John Wiley & Sons, 2001. 518 p. DOI: 10.1002/0470846135

Vnukov, Yu. N., Markov, A. A., Lavrova, L. V., & Berdyshev, N. Yu. Nanesenie iznosostoykikh pokrytiy na bystrorezhushchiy instrument [Deposition of wear-resistant coatings on high-speed cutting tools]. Kyiv: Tekhnika, 1992. 143 p.

Sysoiev, Iu., Shyrokyi, Yu., & Fesenko, K. Modern Methods of Vacuum Arc Ignition in Technological Plasma Sources. Problems of Atomic Science and Technology (PAST), 2026, № 1(161), pp. 184-190. DOI: 10.46813/2026-161-184

Andreev, A. A., Grigorev, S. N., Stolbovoy, V.A. et al. Pyrometr dlya vakumno-dugovykh ustanovok [Pyrometer for vacuum-arc installations]. Eastern-European Journal of Enterprise Technologies, 2010, no. 5/1 (47), pp. 21–25.

Volkov, V. V., Miroshkin, S. I., Shalimov, S. V., & Savelyev, A. A. Sposob polucheniya pokrytiy v vakuume, ustroystvo dlya polucheniya pokrytiy v vakuume, sposob izgotovleniya ustroystva dlya polucheniya pokrytiy v vakuume [Method for obtaining coatings in vacuum, device for obtaining coatings in vacuum, method for manufacturing the device]. RF Patent no. 2176681, IPC C23C14/00, appl. 22.11.1989, publ. 10.12.2001.

Scheibe, H.-J. & Dreschner, D. Preparation of diamond-like films by laser-controlled arc deposition (laser–arc). In: Proceedings of the Joint 4th International Symposium TATF’94 and the 11th Conference HVITF’94, Dresden, March 7–11, 1994, pp. 139–142.

Scheibe, H.-J., Siemroth, P., Schöneich, B., & Mucha, A. Diamond-like carbon film preparation by laser arc. Surface and Coatings Technology, 1992, vol. 52, pp. 129–133. DOI: 10.1016/0257-8972(92)90037-B

Tumarkin, A. V., Khodachenko, G.V., Kaziev, A.V. et al. Magnetronnyi razryad s rasplavlennym katodom [Magnetron discharge with a molten cathode]. Uspekhi prikladnoi fiziki, 2013, vol. 1, no. 3, pp. 276–282.

Rideal, E. K. Concepts in Catalysis. Academic Press, 1968. 194 p.

Sysoiev, Iu., Shyrokyi, Yu., & Sysoiev, A. Zapaluvannia vakuumno-duhovoho rozriadu v dzherelakh plazmy netradytsiinymy metodamy [Ignition of a vacuum arc discharge in plasma sources by non-traditional methods]. Aerospace Technic and Technology, 2022, no. 4(180), pp. 36–45. DOI: 10.32620/aktt.2022.4.04

Considine, G. D. (ed.), Gallagher, G., & Kulik, P. H. (assoc. eds.) Van Nostrand’s Encyclopedia of Chemistry. 5th ed. Hoboken, NJ: Wiley-Interscience, 2005. 1831 p. DOI: 10.1333/s00897050918a

Sysoiev, Yu. O., Shyrokyi, Yu. V., & Fesenko, K. V. Pulsed Vacuum-Arc Plasma Source with Laser Arc Excitation. Problems of Atomic Science and Technology (PAST), 2024, № 1(149), pp. 110-115. DOI: 10.46813/2024-149-110

Sysoiev, Iu., Shyrokyi, Yu., & Fesenko, K. System for Measurement the Product Surface Temperature for Vacuum-Arc Coatings. Problems of Atomic Science and Technology (PAST), 2025, № 2(156), pp. 171-176. DOI: 10.46813/2025-156-171

Denizhenko, A. G., Tochitskiy, E. I., Selifanov, O. V., Mochailo, E. V., & Sheleg, V. V. Vakumnaya elektrodugovaya ustanovka so statsionarnymi i impulsnymi istochnikami plazmy [Vacuum-arc installation with stationary and pulsed plasma sources]. Vestnik Polotskogo gosudarstvennogo universiteta. Seriya B, 2005, no. 6, pp. 103–108.

Demchyshyn, A. V., Mychenko, V. A., Avtonomov, G. A., & Tokarev, O. A. Modifitsirovannaya vakumno-dugovaya ustanovka “Bulat-3T” [Modified vacuum-arc installation “Bulat-3T”]. Sovremennaya elektrometallurgiya, 2009, no. 3 (86), pp. 40–42.

Kinytskyi, Ya. T. Teoriia mekhanizmiv i mashyn [Theory of mechanisms and machines]. Kyiv: Naukova dumka, 2002. 660 p.

Usik, V. V. & Menshikov, V. O. Kurs teorii mekhanizmiv i mashyn [Course of theory of mechanisms and machines]. Kharkiv: Natsionalnyi aerokosmichnyi universytet “KhAI”, 2019. 320 p.

Tkachenko, V. A. Planetarni mekhanizmy (optymalne proektuvannia) [Planetary mechanisms (optimal design)]. Kharkiv: Natsionalnyi aerokosmichnyi universytet “KhAI”, 2003. 446 p.