| Ti and Ti alloys have lots of excellent properties such as high strength weight ratio and melting point, excellent corrosion resistance and plastic property, high modulus of elasiticity and endurance strength etc. Ti-6A1-4V(TC4)is typical double phase Ti alloy of ledeburite a+P type with perfect combination property. However, some defects including high friction coefficient, easy adhesion and low abrasion resistance are obstruction to expand using of Ti-6A1-4V with increasing demand to material property. These flaws can be well worked out by TiC film on the surface of substance, which possesses high melting point and hardness, excellent chemical stabilization and abrasion resistance. It is the better way to improve the abrasion resistance of Ti alloy formed TiC film on the surface of Ti-6A1-4V. This paper mainly study one new technics to form TiC film.Electrical sparkle processing strengthening technology has been increasingly attracted due to simple equipment and technics. High temperature can be released during electrical sparkle processing, which desintergrate working fluid to produce C plasma. Melted Ti combined C plasma transferred to the surface of sample by electric field to form TiC film. The working fluid was kerosene, negative pole was sample of Ti-6A1-4V, while positive pole resorted to different material including copper, plumbago and stainless steel.The film's phase structure on the surface of sample was analyzed by XRD.It was found the film mainly composed TiC phase. Surface morphology and cross-section morphology were investigated by SEM. The samples processed by copper and plumbago electrode were better than stainless steel electrode, the former hardness could up to 1500Hv. Frictional and wear properties were tested on the MM-200 testing machine. It was shown abrasion resistance after electrical sparkle processing treatment using three different electrode was obviously superior to non-treatment.
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