Qualitative use of potentiodynamic polarization and anodic hydrogen evolution in the assessment of corrosion susceptibility in AA2198‐T851 Al–Cu–Li alloy
Qualitative use of potentiodynamic polarization and anodic hydrogen evolution in the assessment of corrosion susceptibility in AA2198‐T851 Al–Cu–Li alloy
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DOI：
10.1002/maco.201810108
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
U. Donatus;Larissa O Berbel;I. Costa
中科院分区：
文献类型：
--
作者：
U. Donatus;Larissa O Berbel;I. Costa
通过对AA2198-T851及其搅拌摩擦焊接件的腐蚀行为的研究，揭示了动电位极化的定性应用和阳极析氢(AHE)的影响。结果表明，随着电解槽结构和电解液的变化，铝合金在击穿电位以上的极化曲线的阳极臂可以显示出一些细节。此外，AHE还会干扰阳极臂中测量的电流密度，进而可以用来评估合金的腐蚀敏感性程度和阳极溶解行为的变化。
In this study, the corrosion behavior of the AA2198‐T851 and its friction stir weldment was used to show the qualitative use of potentiodynamic polarization and the effect of anodic hydrogen evolution (AHE). The results showed that some details can be revealed in the anodic arm of the polarization curves of an Al alloy above the breakdown potential with changes in cell configuration and electrolytes. In addition, AHE interferes with the measured current density in the anodic arm, which in turn can be used to assess the extent of corrosion susceptibility and changes in anodic dissolution behavior of the alloy.