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首页> 外文期刊>Journal of Materials Engineering and Performance >Electrochemical Corrosion Behavior of Powder Metallurgy Ti6Al4V Alloy
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Electrochemical Corrosion Behavior of Powder Metallurgy Ti6Al4V Alloy

机译：粉末冶金Ti6Al4V合金的电化学腐蚀行为

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摘要

The corrosion behavior of powder metallurgy (PM) Ti6Al4V alloys with different relative densities ranged from 95.2 to 99.5% is investigated in 3.5 wt.% NaCl solution at room temperature by electrochemical methods, including potentiodynamic polarization curves and electrochemical impedance spectroscopy. For comparison, traditional wrought Ti6Al4V alloy with full densification is also investigated. The results show that the corrosion resistance of PM Ti6Al4V alloys increases with the increasing density. All the studied samples exhibit low I-p values (in the order of 10(-6) A cm(-2)), indicating good corrosion resistance under current experimental conditions. Therefore, density effect on the corrosion resistance of PM Ti6Al4V alloys is less significant. It is worth noting that the corrosion resistance and mechanical performance of PM Ti6Al4V alloys with nearly full densification are comparable to those of wrought alloys. Therefore, PM Ti alloys are promising candidates in the marine application.
机译：采用电化学方法，包括动电位极化曲线和电化学阻抗谱，研究了室温下不同相对密度（95.2%-99.5%）的粉末冶金Ti6Al4V合金在3.5 wt.%NaCl溶液中的腐蚀行为。为了进行比较，还研究了具有完全致密化的传统锻造Ti6Al4V合金。结果表明，粉末冶金Ti6Al4V合金的耐蚀性随密度的增加而提高。所有研究样品的I-p值均较低（约为10（-6）A cm（-2）），表明在当前实验条件下具有良好的耐腐蚀性。因此，密度对PM Ti6Al4V合金耐蚀性的影响不太显著。值得注意的是，几乎完全致密化的PM Ti6Al4V合金的耐蚀性和机械性能与锻造合金相当。因此，粉末冶金钛合金是一种很有前途的海洋应用材料。

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