以 N2和 Ar的混合气为气源,在 Ti6Al4V表面离子渗氮形成渗氮层.对渗层的相结构、表面粗糙度、显微硬度及与基体的结合强度等进行了测试分析,并用球－盘滑动磨损试验机对渗层的摩擦学性能进行了研究.结果表明:在 N2/Ar=1:1, 900℃的渗氮条件下,渗氮层主要由化合物 Ti2N, TiN和氮在α-Ti中的固溶体α相等相组成;渗氮后试样的表面粗糙度增大;渗氮层的硬度较基材 Ti6Al4V有很大提高,且与基体间有较好的结合强度;在球－盘滑动磨损试验中,渗氮层无减摩效果,但其耐磨性较基材 Ti6Al4V大大增强.
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