| 摘要 |
Sintered product exhibiting a relative density of greater than 97% and composed of: more than 92% by weight of silicon carbide, between 0.5% and 8% by weight of an amorphous secondary phase comprising the elements O, Si and one or two elements chosen from Al and Y, less than 2% of other elements, present in said product in the form of an additional phase or of unavoidable impurities, in which the silicon carbide is present in the form of crystalline grains and in which said secondary phase is amorphous and located essentially at the boundaries of the silicon carbide grains. |
