Use of Vacuum-Arc Coatings Based on Ni-Cr and Fe-Ni-Cr Alloys in Rocket and Space Technology
Year: 2026
Type: article
Abstract: Growth in the performance of liquid-propellant jet engines’ combustion chambers requires increasing the chamber’s temperature. To enhance the heat resistance, strength, and wear resistance of combustion chamber walls, a technology of the vacuum-arc deposition of coatings based on the ХН78Т and 12Х18Н10Т alloys has been developed. The influence of process parameters on the composition, structure, and functional characteristics of the coatings, which define their microhardness and wear resistance, has been studied. Microstructural and micro-X-ray spectral analyses have been used to investigate the structure and the phase composition of the coatings. It has been demonstrated that the principal factor affecting the structure of the material and the microhardness of the coating at a constant substrate temperature is the pressure in the chamber, which was maintained by supplying nitrogen to the chamber. It enables easy control over the deposition process to attain the necessary functional characteristics of the coatings.
Source: Romanian Journal of Physics
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7202340244