In this paper, Ti₂AlNb-based composites with different concentrations of Ag were fabricated by ball milling and spark plasma sintering (SPS). Microstructural evolution and phase compositions of the composites were further analyzed. The MS-T3001 friction wear tester was used to evaluate the friction performance of the Ag/Ti₂AlNb self-lubricating composites. Results showed that the composites exhibit better anti-friction and anti-wear performance comparing with pure Ti₂AlNb alloy. As the Ag wt.% increased, the coefficient of friction (COF) and wear rate of the composites were all decreased. Compared with pure Ti₂AlNb, the COF and wear rate of Ti₂AlNb-15 wt.%Ag self-lubricating composites at room temperature were decreased approximately 42 and 46%, respectively. The self-lubricating mechanisms of the composites were further discussed, and the silver-rich friction film formed on the friction surface under compression stress was regarded as the main anti-friction and anti-wear factors.

本文通过球磨和火花等离子体烧结（SPS）制备了具有不同Ag含量的Ti ₂ AlNb基复合材料。进一步分析了复合材料的微观结构演变和相组成。MS-T3001摩擦磨损测试仪用于评估Ag / Ti ₂ AlNb自润滑复合材料的摩擦性能。结果表明，与纯Ti ₂ AlNb合金相比，复合材料具有更好的减摩和抗磨性能。随着Ag重量％的增加，复合材料的摩擦系数（COF）和磨损率均降低。与纯Ti相比₂ AlNb，TI的COF和磨损率₂在室温下，AlNb-15 wt。％Ag自润滑复合材料分别降低了约42％和46％。进一步探讨了复合材料的自润滑机理，认为在压缩应力作用下形成于摩擦面上的富银摩擦膜是主要的抗磨和抗磨性能。