(1. 江蘇大學(xué) 材料科學(xué)與工程學(xué)院，鎮(zhèn)江 212013；
2. 蘇州環(huán)球集團(tuán)科技股份有限公司，蘇州 215156)
摘 要: 在TC4合金/GCr15鋼摩擦界面分別添加MoS2、Fe2O3等固態(tài)顆粒，研究兩種顆粒對TC4合金磨損行為的影響；采用XRD、SEM、EDS等手段表征TC4合金的磨損特征，并探討磨損機(jī)制。結(jié)果表明：TC4合金具有較差的耐磨性，而兩種顆粒顯著改變其磨損性能。當(dāng)MoS2或Fe2O3在磨損表面形成連續(xù)的固態(tài)顆粒層時，TC4合金的磨損質(zhì)量損失顯著下降。Fe2O3顆粒層具有較強(qiáng)的承載能力，可以保護(hù)鈦合金避免磨損；而MoS2層在高載下容易破碎，TC4合金失去保護(hù)作用，磨損增加。無添加及MoS2層破碎時，TC4合金以磨粒和粘著等嚴(yán)重磨損機(jī)制為主，當(dāng)磨損表面連續(xù)覆蓋固態(tài)顆粒層時由嚴(yán)重磨損向輕微磨損轉(zhuǎn)變。
關(guān)鍵字: 固態(tài)顆粒層；TC4合金；磨損行為；磨損機(jī)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
