| 摘要 |
The present invention provides a heat-resistant bearing characterized in that it is formed of an Ni 3 (Si, Ti)-based intermetallic compound alloy, the Ni 3 (Si, Ti)-based intermetallic compound alloy containing 25 to 500 ppm by weight of B with respect to a weight of an intermetallic compound having a composition of 100% by atom in total consisting of 10.0 to 12.0% by atom of Si, 1.5% by atom or more but less than 7.5% by atom of Ti, more than 2.0% by atom but 8.0% by atom or less of Ta and a balance made up of Ni excepting impurities, the Ni 3 (Si,Ti)-based intermetallic compound alloy having a microstructure composed of an L1 2 phase and of one or both of an Ni solid solution phase and a second phase dispersion containing Ni and Ta, or a microstructure composed of an L1 2 phase. |
