| 摘要 |
PROBLEM TO BE SOLVED: To produce fiber bonded ceramics having high strength and fracture toughness and excellent in dynamic characteristics in air at high temp. by combining specified inorg. fibers with a specified inorg. material and allowing a prescribed carbon layer to exist as a boundary layer between them. SOLUTION: Ceramics is composed of inorg. fibers and an inorg. material, and an amorphous and/or crystalline carbon layer of 1-200nm thickness is allowed to exist as a boundary layer between them. The inorg. fibers contain an aggregate of an amorphous material consisting of Si, M (M is Ti or Zr), C and O and/or crystalline superfine particles of β-SiC, MC and C and amorphous SiO2 and MO2 . The inorg. material exists so as to fill the gaps among the inorg. fibers and contains an amorphous material consisting of Si and O or further contg. M and/or crystalline SiO2 and/or MO2 and dispersed crystalline fine MC particles of <=100nm particle diameter. |
