中文摘要：

在TC4合金/GCr15钢摩擦界面分别添加MoS_2、Fe_2O_3等固态颗粒,研究两种颗粒对TC4合金磨损行为的影响;采用XRD、SEM、EDS等手段表征TC4合金的磨损特征,并探讨磨损机制。结果表明：TC4合金具有较差的耐磨性,而两种颗粒显著改变其磨损性能。当MoS_2或Fe_2O_3在磨损表面形成连续的固态颗粒层时,TC4合金的磨损质量损失显著下降。Fe_2O_3颗粒层具有较强的承载能力,可以保护钛合金避免磨损;而MoS_2层在高载下容易破碎,TC4合金失去保护作用,磨损增加。无添加及MoS_2层破碎时,TC4合金以磨粒和粘着等严重磨损机制为主,当磨损表面连续覆盖固态颗粒层时由严重磨损向轻微磨损转变。

英文摘要：

The effect of MoS_2, Fe_2O_3 particles on wear behavior of TC4 alloy was studied by being artificially supplied onto the interface between TC4 alloy/GCr15 steel. The wear characteristics of TC4 alloy were examined by XRD, SEM and EDS; the wear mechanism was also discussed. The results show that TC4 alloy has a poor wear resistance, but two particles significantly change its wear performance. As the continuous solid particle layers of MoS_2 or Fe_2O_3 form, the wear loss of TC4 alloy significantly decreases. Fe_2O_3 particles layer has a strong load-carrying capacity, and protects titanium alloy against wear. However, MoS_2 particles layer is readily broken under high load, resulting in an increase of wear loss of TC4 alloy. As there is no additive, or MoS_2 layer is broken, abrasive and adhesion wear prevail during sliding of TC4 alloy. On the contrary, as the continuous particle layer covers worn surface, severe-to-mild wear transition occurs.