Abstract
Coatings based on MoSi2 on a ceramic matrix composite substrate were obtained by reaction synthesis using the technology of slip-firing deposition of powder compositions at 1500 °C and a pressure of 8–9 mPa. The mechanisms of reaction interaction in the Mo–Si–C and Mo–Si–C–HfB2 systems are proposed, which determine the synthesis of secondary phases MoSi2, Mo4,8Si3С0,6, MoB and HfС. Thermodynamic calculations of possible chemical reactions have been carried out. Potential reasons for the high porosity of the synthesized coatings are analyzed.
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