ARTICLE WITH SILICON CARBIDE COATING AND METHOD FOR MANUFACTURING OF ARTICLE WITH SILICON CARBIDE COATING Russian patent published in 2019 - IPC C23C16/32 C23C16/44 

FIELD: manufacturing technology.

SUBSTANCE: group of inventions relates to thermal protection, optical and antioxidant coatings and can be used to increase chemical inertia, operating temperature of articles and to create special optical coatings used in aerospace industry, fuel and energy complex, in chemical industry, electronic industry, etc. Product comprises base from material, melting point of which exceeds 950 °C, and two-layer coating of silicon carbide on its surface. Two-layer silicon carbide coating consists of a lower layer of silicon carbide with a nanoporous spongy structure and a coating layer of silicon carbide with a mono- or polycrystalline structure. Method of making article containing base of material, melting point of which exceeds 950 °C, with two-layer coating of silicon carbide on its surface, consisting of lower layer of silicon carbide with nanoporous spongy structure and located on it coating layer of silicon carbide with mono- or polycrystalline structure. Preliminary on the surface of said base of the article a precursor layer of silicon is applied, then the article is placed in a vacuum furnace, thereafter, carbon monoxide is fed into the vacuum furnace and said coating is formed to allow thermochemical heterogeneous reaction of the deposited silicon with carbon monoxide.

EFFECT: improved properties of coating from silicon carbide due to characteristics of its layers, namely lower layer, having damping properties, and upper layer with high degree of crystallinity and continuity, wherein when forming two-layer coatings, total thickness of coating is increased.

6 cl, 5 dwg