Review of Home-Grown Technologies in the Field of Protection of Carbon-bearing Materials from Gaseous Corrosion and Erosion in Plasma’s High-Speed Flow

Abstract

This article is continuation of authors’ publication cycle on subject «Multifunctional protective c-e for extra heat-stressed elements of structure of hypersonic systems». There was made analysis of modern domestic approaches to creation of single-ply and multilayer protective coatings of various classes: glass-ceramic, receiving by means of different methods; on the base of oxide ceramics; oxygen-free reaction-bonded; microcomposite syner- getic type. There was paid attention on full absence of applied science investigations, oriented on development of structured and physic-chemical models of coatings’ architecture, substantiation it’s functioning in the conditions of interaction with gas’ high-speed flow. Selection of coatings’ chemical composition and processing technology of its formation is realized basically on empirical base. There was presented a range of coatings, declared as workable in the still or weak perturbed air up to temperature 1600–2000 °C; however, there is not realistic estimate its protective capabilities in the conditions of impact of high entalpic ultra- and hypersonic oxygenated gas flow, owing lack or absence of appropriate data. Especially pinpointed microcomposite coatings of synergetic type Si–TiSi 2 –MoSi 2 –B–Y, developed in the frame of original conceptual approach to creation of multilevel sys- tem of heat protection of heat-stressed construction elements from heat-resisting materials of hypersonic motor apparatus and its propulsion plants. Detailed analysis of its r within single constructive wall with protected carbonaceous material allows detect trends and directions of authors’ follow- up study with the aim of development’s improvement.