METHOD FOR PRODUCTION OF CERAMIC COMPOSITE Russian patent published in 1995 - IPC

FIELD: technology for production of ceramic composite materials. SUBSTANCE: method for production of ceramic composite includes preparation separately of powder suspension of matrix and fiber suspension by use of dispersion medium in form of aqueous solution of polyvinyl alcohol in the amount of 0.5-1.0 mas. mixing of these suspension, and at the end of mixing, mixture is subjected to quasi freezing, and acetone is added in the amount of 1.5-2.0 times more than volume of suspension. Method allows production of composite ceramic materials with uniform distribution of fibers in matrix and high-strength properties: strength of material from Al₂O₃ and fibers of SIC amounts to 1202-1251 MPa, and from Y₂O₃ and fibers of Al₂O₃ 761-868 MPa. EFFECT: higher efficiency. 2 tbl