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一、概述钛和钛合金比重小,有高的比强度和抗蚀性。但耐磨性较差,且有粘结倾向,在摩擦条件下工作易擦伤,因此限制了用钛合金制造耐磨零件。为了提高表面硬度和耐磨性,国外广泛研究了钛和钛合金的化学热处理对耐磨性和耐热性的影响。实验证明,氮化、氧化、渗碳、渗铝等化学热处理都可提高钛合金的耐磨性和耐热性及使用寿命。
First, an overview of the small proportion of titanium and titanium alloy, a high specific strength and corrosion resistance. However, the wear resistance is poor, and there is a tendency to stick in the friction work easy to scratch, thus limiting the use of titanium alloy wear parts. In order to improve the surface hardness and wear resistance, a comprehensive study of titanium and titanium alloy chemical heat treatment on the wear resistance and heat resistance. Experiments show that nitriding, oxidation, carburizing, aluminizing and other chemical heat treatment can improve the wear resistance and heat resistance of titanium alloys and service life.