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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Behavior of Fe3Al Modified with Ni in Hank′s Solution
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Electrochemical Behavior of Fe3Al Modified with Ni in Hank′s Solution

机译：Ni修饰的Fe 3 Al在Hank溶液中的电化学行为

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An investigation about the corrosion resistance of Fe3Al-type intermetallic alloys in Hanks solutionwas carried out via electrochemical techniques. The Fe3Al intermetallic alloy was modified withadditions of Ni and evaluated in the as cast and thermal treated conditions. For comparison, Titaniumand 316-L stainless steel were also evaluated. For evaluation purposes, electrochemical techniquesincluded potentiodynamic polarization curves, open circuit potential measurements, linear polarizationresistance curves and cyclic polarization curves were employed. Results shown that the 316-L stainlesssteel and titanium are the materials with greater corrosion resistance in chloride-rich environmentsshowing an active-passive behavior and are susceptible to pitting corrosion. Compared to 316-L SSand Titanium, intermetallic Fe3Al alloys had greater susceptibility to pitting corrosion. Ni additionchanged the corrosion potential of the intermetallic base Fe3Al to more noble values. Ni addition andthermal treatment improved the corrosion resistance of Fe3Al-base alloy owing to an increased stabilityof the passive layer.
机译：通过电化学技术研究了Fe3Al型金属间合金在汉克斯溶液中的耐蚀性。 Fe3Al金属间合金通过添加Ni进行了改性，并在铸造和热处理条件下进行了评估。为了进行比较，还评估了钛和316-L不锈钢。为了进行评估，采用了电化学技术，包括电位动力学极化曲线，开路电势测量，线性极化电阻曲线和循环极化曲线。结果表明，316-L不锈钢和钛是在富含氯化物的环境中具有更高抗腐蚀性的材料，表现出主动-被动行为，并且易于点蚀。与316-L SS和钛相比，金属间Fe3Al合金对点蚀的敏感性更高。 Ni的添加将金属间化合物Fe3Al的腐蚀电位改变为更高的贵金属值。镍的添加和热处理由于钝化层的稳定性的提高而提高了Fe3Al基合金的耐蚀性。

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