COMPOSITE SINTERED BODY AND COMPOSITE SINTERED BODY TOOL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a composite sintered body excellent in wear resistance and chipping resistance.

SOLUTION: The composite sintered body contains 60 vol.% or more and 99.7 vol.% or less of SiAlON and the rest of binder. The binder contains FeAl compound. The structure of the binder has noncontinuous parts. In is preferable that the binder further contains FeSi compound, Si3N4, and Al2O3. It is preferable that the major diameter of the particle size of 10% or more and less than 95% of the binder of the binder contained in the composite sintered body is 5 μm or less.

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