PROCESS FOR MANUFACTURING SILICON CARBIDE BASED CERAMICS Russian patent published in 1994 - IPC

FIELD: processes for manufacturing ceramics. SUBSTANCE: a mixture of powders of alpha-silicon carbide, aluminium nitride, REE oxide and aluminium oxide is jointly comminuted, the half-finished article having a thermoplastic binding material is molded, the binding material is removed by heat treatment to its residual content of 0.8-5.0%, then sintered in a non-oxidizing gas medium at 2100-2250 C at a vapor pressure rise rate of 0.05-0.5 MPa/hr. The positive effect resides in that the strength characteristics of ceramics become higher to manufacture configuration engine members. EFFECT: improved crack resistance of ceramics. 1 tbl