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采用双层辉光等离子表面技术在Ti6Al4V钛合金表面进行钨-钼共渗,并对渗层的结构和高温摩擦磨损性能进行了研究。结果表明:在Ti6Al4V合金表面形成了与基体结合良好的钨-钼共渗层;渗层由沉积层、过渡层和扩散层构成,渗层组织为钨、钼及其在钛合金中的固溶体TixW1-x、MoTi;与基体相比,在450℃条件下共渗层的摩擦因数稍有降低,而耐磨性却显著提高,且磨损后渗层表面磨痕显著减小,粘着和擦伤现象均得到明显减轻,其磨损机制主要是粘着磨损和少量的微切削。
The surface of Ti6Al4V titanium alloy was subjected to tungsten - molybdenum infiltration by double glow plasma surface technology. The structure and high temperature friction and wear properties of the layer were studied. The results show that the tungsten-molybdenum alloying layer is well formed on the surface of Ti6Al4V alloy. The diffusion layer consists of sedimentary layer, transition layer and diffusion layer. The diffusion layer consists of tungsten, molybdenum and their solid solution TixW1 -x, MoTi. Compared with the matrix, the friction coefficient of the co-layer decreases slightly at 450 ℃, while the wear resistance increases obviously. Were significantly reduced, the wear mechanism is mainly adhesive wear and a small amount of micro-cutting.