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采用真空电弧熔炼法制备了Ti40Ni40Cu20钛基非晶复合材料,并研究其在不同载荷条件下的摩擦磨损性能。研究结果表明:非晶复合材料形成了3个宽泛的XRD漫散衍射峰及对应尖锐衍射峰,结晶相是BCC结构的β钛固溶体,其显微硬度为628 HV。试样在高载荷条件下具有比低载荷明显更小的摩擦系数,随载荷增加摩擦系数出现随测试时间延长先降后趋于稳定的变化。复合材料试样的磨损率表现为先随载荷增大而下降,之后又重新增大的变化趋势。当载荷达到10N时间,磨损率达到2.68×10~(-4)mm~3(N·m)的最小值,此时,试样表面磨痕出现了较多的深沟槽,并且磨屑数量也显著增加。
The Ti40Ni40Cu20 Ti-based amorphous composite was prepared by vacuum arc melting method and its friction and wear properties under different loading conditions were studied. The results show that three broad XRD diffuse diffraction peaks and corresponding sharp diffraction peaks are formed in the amorphous composites. The crystal phase is β-Ti solid solution with BCC structure, and the microhardness is 628 HV. The specimen has significantly lower friction coefficient under low load than that under high load. With the increase of load, the friction coefficient appears to be stable after the test time goes down. The wear rate of composite samples showed the trend of decreasing first with the increase of load and then increasing again. When the load reaches 10N, the wear rate reaches the minimum value of 2.68 × 10 ~ (-4) mm ~ 3 (N · m). At this time, there are more deep grooves in the wear marks on the sample surface, Also increased significantly.