SILICON NITRIDE SINTERED COMPACT AND SLIDING MEMBER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a silicon nitride sintered compact having improved strength and wear resistance as material characteristics by reducing the size or the quantity of voids in the silicon nitride sintered compact.

SOLUTION: The silicon nitride sintered compact contains 0.05-5 mass% Ti compound expressed in terms of metal Ti. The Ti compound contains TiN and TiCN. In the measurement of X-ray diffraction of the silicon nitride sintered compact, the ratio (ITiCN/ITiN) of the maximum peak intensity ITiCNof TiCN to the maximum peak intensity ITiNof TiN is controlled to ≤0.5. The silicon nitride sintered compact is used as a sliding member such as a bearing ball 2.

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