SILICON NITRIDE COMPOSITE MATERIAL AND METHOD FOR FORMING THE SAME

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PROBLEM TO BE SOLVED : To provide a silicon nitride composite material excellent in oxidation resistance and to provide a method for producing the same. SOLUTION : The silicon nitride composite material 10 is one improved in oxidation resistance wherein a silicate phase 12 composed of a rare earth element silicate is distributed among crystal grains composed of silicon nitride 11 as a matrix phase, and metal silicate particles 13 are dispersed in the silicate phase 12.