(1. 江苏大学 材料科学与工程学院，镇江 212013；
2. 苏州环球集团科技股份有限公司，苏州 215156)
摘 要: 在TC4合金/GCr15钢摩擦界面分别添加MoS2、Fe2O3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MoS2或Fe2O3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。Fe2O3颗粒层具有较强的承载能力，可以保护钛合金避免磨损；而MoS2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MoS2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。
关键字: 固态颗粒层；TC4合金；磨损行为；磨损机制
（1. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China;
2. Suzhou Universal Group Technology Co., Ltd., Suzhou 215156, China）
Abstract:The effect of MoS2, Fe2O3 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 MoS2 or Fe2O3 form, the wear loss of TC4 alloy significantly decreases. Fe2O3 particles layer has a strong load-carrying capacity, and protects titanium alloy against wear. However, MoS2 particles layer is readily broken under high load, resulting in an increase of wear loss of TC4 alloy. As there is no additive, or MoS2 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.
Key words: solid particles layer; TC4 alloy; wear behavior; wear mechanism
