Plasma Surface Niobium Alloying on Pure Titanium and Ti6Al4V Alloy

摘要

Ti-45Nb is a typical Ti-Nb alloy which possesses burn-resistant property as well as superior corrosion resistance and mechanical properties. However, high content of expensive niobium makes the production of this alloy very costly and also reduces the specific strength, and therefore its application is hindered. In this study, a Ti-Nb alloyed layer is prepared on surface of pure titanium and Ti6Al4V alloy by double glow plasma surface alloying process. In this way, these conventional titanium alloys are endowed with the properties of Ti-Nb alloy cost-effectively and the high specific strength of the bulk material is remained.The results of this study indicate that plasma surface niobium alloying is a promising way to improve surface properties of titanium alloys.