Surface modification of titanium alloy Ti6Al4V by plasma niobium alloying process
Surface modification of titanium alloy Ti6Al4V by plasma niobium alloying process
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DOI：
10.1016/j.surfcoat.2006.07.061
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发表时间：
2007-02
影响因子：
5.4
通讯作者：
Zhi-yong He;Zhenxia Wang;Wenbo Wang;Ailan Fan;Zhong Xu
中科院分区：
文献类型：
--
作者：
Zhi-yong He;Zhenxia Wang;Wenbo Wang;Ailan Fan;Zhong Xu
将等离子表面铌合金化工艺应用于Ti6Al4V合金。研究了最佳加工条件。划痕试验证明合金层与基体结合良好。改性表面的硬度和摩擦学性能明显提高，并可通过渗碳作为后处理进一步提高。合金层的氧化动力学研究表明，铌改性表面的抗氧化性在高达 900 °C 的温度下得到改善。浸泡试验表明，在H2SO4溶液中耐腐蚀性能得到提高。这些结果表明，等离子表面铌合金化是对Ti6Al4V合金进行表面改性的有效方法，使其能够满足更苛刻的工况条件。
Plasma surface niobium alloying process was applied to Ti6Al4V alloy. The optimum processing condition was investigated. Scratch test proved that the alloyed layer was well integrated with the substrate. The hardness and tribological performance of the modified surface was enhanced obviously and could be further improved by applying carburizing as post treatment. Oxidation kinetics study of the alloyed layer demonstrated that the oxidation resistance of the niobium modified surface was improved at temperatures up to 900 °C. Immersion tests showed that corrosion resistance was improved in H2SO4solution. These results indicate that plasma surface niobium alloying is an effective way to modify the surface of Ti6Al4V alloy, making it qualified for more demanding working conditions.