Patent ID: 6624105
Filing Date: 2003-09-23
Classification: C04B,Y10T

Abstract:
An oxide ceramic fiber/oxide ceramic composite material comprising:a plurality of primary composite materials having gaps therebetween, each consisting of (a) an assembly of ceramic fibers composed mainly of a first metal oxide and (b) a second metal oxide ceramic which surrounds the ceramic fiber assembly (a) therein, a second metal oxide of the second metal oxide ceramic (b) being different from the first metal oxide of the ceramic fiber assembly (a) and the amount of the second metal oxide ceramic (b) being 1 to 85% by weight relative to the weight of the ceramic fiber assembly (a), and a third metal oxide ceramic which is a matrix for the primary composite materials and which includes the primary composite materials therein, the matrix filling gaps between the primary composite materials, but not infiltrating into the ceramic fiber assembly (a), a third metal oxide of the third metal oxide ceramic being the same as or different from the first metal oxide of the ceramic fiber assembly (a), which composite material is integrally sintered and has a relative density of 20 to 95% as compared with the density of the total metal oxides in the composite material.