钛和钛的合金重量轻、强度大、耐腐蚀性好。因而被广泛应用。但是,钛却不具备象钢淬火后硬度能提高的特性。因此纯钛及合金或者是同其他金属相结合的钛的合金零件,尤其是在有高耐磨性要求时就需要进行表面热处理以提高硬度。以前,为了达到这个目的,一直都采用氮化或硼化处理的方法。但是,这些方法至今还有许多难以解决的困难。 Titanium and titanium alloy light weight, high strength, good corrosion resistance. It is widely used. However, titanium does not possess the property that the hardness of steel increases after quenching. Therefore, pure titanium and alloy or titanium alloy parts combined with other metals, especially in the high wear resistance when the need for surface heat treatment to improve the hardness. In the past, nitriding or boriding treatments have been used for this purpose. However, there are still many difficult problems to be solved by these methods so far.