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采用双辉等离子渗金属技术在TA15钛合金表面制备了Cr-Si复合渗层。研究了不同载荷（130 g、230 g、330 g）下Cr-Si复合渗层的摩擦性能。使用硬度仪、纳米压痕仪和划痕仪测定了复合渗层的力学性能。采用HT-500型摩擦磨损试验机对TA15合金和Cr-Si复合渗层进行了摩擦磨损试验，以研究载荷对摩擦因数和比磨损率的影响。采用SEM、EDS等探究了渗层的磨痕形貌、成分变化及磨损机制。结果表明，Cr-Si复合渗层与基体结合良好，渗层总厚度达40μm，力学性能较基体有大幅度提高。在不同载荷下，渗层的摩擦因数、磨损体积和比磨损率均较基体大大降低。在重载荷下，基体的磨损机制主要为磨粒磨损和黏着磨损，而Cr-Si复合渗层则以磨粒磨损和氧化磨损为主。“,”Using a double glow plasma surface alloying technology,the composite impregnation of TA15 titanium alloy with chromium and silicon was performed,to produce a Cr-Si -alloyed layer on it.Tribological behaviors of the Cr-Si-alloyed layer under such loads as 130 g,230 g and 330 g were investigated,and its mechanical properties were measured by means of hardness tester,nano-indentation apparatus and scratch tester.Frictional wear tests were done by the use of frictional wear tester for both the TA15 alloy and the Cr-Si-alloyed layer,to investigate the effect of loads on the friction coefficient and the specific wear rate. Wear scratch Pattern, chemical composition change and wear mechanism of the Cr-Si-alloyed layer were explored with the use of SEM and EDS. The results show that the Cr-Si-alloyed layer is well bonded to the substrate,and offers as total thickness as 40μm,and significantly higher mechanical properties than the substrate.Moreover,the friction coefficient,wear volume and specific wear rate of the Cr-Si-alloyed layer are much lower than those of the substrate under the different loads, and primary wear mechanism is abrasive wear and adhesive wear for the TA15 alloy,and oxidation wear and abrasive wear for the Cr-Si-alloyed layer,under heavy load.