【摘 要】
：
The TiSiC coating was deposited on the surface of Ti6Al4V by multi arc plating technique. The composition, microstructure, crystal structure and hardness of the coating were analyzed by X-ray diffract
【机 构】
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Harbin Normal University, School of physics and Electronic engineering, Key Laboratory of the Minist
【出 处】
：
第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
The TiSiC coating was deposited on the surface of Ti6Al4V by multi arc plating technique. The composition, microstructure, crystal structure and hardness of the coating were analyzed by X-ray diffraction, scanning electron microscope, high-resolution tran mission electron microscope and MTS nanoindenter G200 system. High temperature tribological properties of the coating in 500 ℃、600 ℃、700 ℃ were investigated by UMT-3 multi-functional tribometer. The results show that: the structure of TiSiC coating is dense and have a coupled structure of nanocrystalline/amorphous. The C element in TiSiC coating is consisted by sp2C-C and sp3C-C bonds. The hybridized carbon composed of sp2 and sp3 bonds has very high hardness, at the same time the graphite carbon existing as sp2 bond can obviously reduce friction coefficient of the coatings. Through measure, the hardness of the coating is about 27.3 Gpa. The wear rate of the TiSiC coating was 1.01×10-4 mm3N-1m-1, 6.25×10-6 mm3N-1m-1, 3.39×10-6 mm3N-1m-1 in 500 ℃, 600 ℃, 700 ℃, respectively. Significantly, the wear rate in 700 ℃ and 600 ℃ was lower than that in 500 ℃, which is reduced by two orders of magnitude.
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