Microstructure and Tribological Properties of Ti-Al Self-lubricating MaterialsYANG Li-ying1,2,LIU Zuo-min1 (1.Institute of Tribology,Wuhan University of Technology,Wuhan 430070,China;2.School of Mechanical Engineering,University of Jinan,Jinan 250022,China)48Ti-48Al-2Nb-2Cr self-lubricating materials with addition of different weight contents of 38%CaF2-62%BaF2 eutectic solid lubricant(5%,10%,15%,20%, respectively) were fabricated by vacuum hot pressing technology.The wear mechanism and film forming theory were discussed.The self-lubricating materials with 10% solid lubricant began to form solid lubricating film while that of 15% form intact protective film and exhibited good wear-resistance properties.At the same time,porosity of materials accompanied by light decline of mechanical properties decreases with increases of solid lubricant.Ti-Al alloy;self-lubricating;solid lubricant;microstructure;abrasive wear