| 摘要 |
PROBLEM TO BE SOLVED: To provide a static member for heat engine, which is hard to break at the time of contact, does not cause great deterioration of oxidation resistance of a precise object and mechanical property, and has excellent grinding property, and also to provide its manufacturing method. SOLUTION: This static member for heat engine is characterized in that it includes a silicon nitride as its main crystal phase, an excess oxygen, a 3a group element in the periodic table, and comprises a sintered compact with 0.05-1.5 wt.% total amount of Al, Ca and Fe, has 0.01-0.5 μm central pore size, 1-5 μm mean pore size, <=30 μm maximum pore size by mercury penetration method. |
