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采用激光熔化沉积工艺制备出以块状Ti5Si3过渡金属硅化物为初生相、以Ti5Si3/NiTi共晶为基体的双相金属间化合物耐磨合金,在室温干滑动磨损条件下测试了Ti5Si3/NiTi合金的耐磨性能并讨论了其磨损机制。结果表明,由于Ti5Si3/NiTi合金良好的强韧性配合以及在磨损过程中磨损表面上形成了“无组织特征”的表面高硬度层,对合金有保护作用,合金在室温干滑动磨损条件下具有优异的耐磨性能和很低的载荷敏感性。
Ti5Si3 / NiTi alloy with Ti5Si3 / NiTi eutectic as matrix was prepared by laser melting deposition process. The wear resistance of Ti5Si3 / NiTi alloy Wear resistance and discusses its wear mechanism. The results show that due to the good strength and toughness of the Ti5Si3 / NiTi alloy and the formation of a “high hardness” layer on the worn surface during wear, the alloy has a protective effect. The alloy is subjected to dry sliding wear at room temperature Has excellent wear resistance and low load sensitivity.