Abstract In this study, the different corrosion behaviors between α and β phases of Ti6Al4V in solutions with different NaF concentrations are investigated. When the NaF concentration changes from 0.15 to 0.20 M, α phases are more likely to suffer from corrosion than β phases. However, the formation of a repassive film makes α phases exhibit superior corrosion resistance than β phases as the NaF concentration reaches 0.50 M. The mechanism analysis reveals that the formation of a repassive film on the α phases depends on not only the Al content but also on the active dissolution rate of Ti.

中文翻译：

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Ti6Al4V在含氟溶液中α和β相的不同腐蚀行为：合金元素Al的影响

摘要 本研究研究了Ti6Al4V在不同NaF浓度溶液中α相和β相的不同腐蚀行为。当 NaF 浓度从 0.15 变为 0.20 M 时，α 相比 β 相更容易受到腐蚀。然而，当 NaF 浓度达到 0.50 M 时，再钝化膜的形成使 α 相表现出优于 β 相的耐腐蚀性。机理分析表明，在 α 相上形成再钝化膜不仅取决于 Al 含量，还取决于Ti 的活性溶解速率。