Abstract
Heat-resistant slip coatings of the ZrB2–MoSi2–SiC system on CCCM were examined for protection of aerospace technology elements from oxidation. The following compositions (mass%) were studied as coating materials: 55 ZrB2 + 25 MoSi2 + 20 SiC (ZSM25), 50 ZrB2 + 30 MoSi2 + 20 SiC (ZSM30), and 45 ZrB2 + 35 MoSi2 + 20 SiC (ZSM35). Heat-treatment modes were elaborated for the coatings. The optimal method for producing heat-resistant coatings was selected. The ZSM25 coating was found to satisfy the heat-resistance assessment tests conditions in a Multiplaz 2500-m plasmatron for 20 sec at an angle of 45°, presumably by forming a highly viscous ZrSiO4 film.
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