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Corrosion characteristic of Cu-10Ni-Fex in 3.5 % NaCl

机译:Cu-10Ni-Fe x 在3.5%NaCl中的腐蚀特性

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The corrosion charateristic of Cu-10Ni-Fex alloys (x=0.84, 1.26, 1.76) in 3.5 % NaCl solution wasinvestigated by using electrochemical impedance spectroscopy, potentiodynamic polarization curve,X-ray Diffraction and X-ray photoelectron spectroscopy. The results showed that the order ofcorrosion resistance is Cu-10.52Ni-1.26Fe>Cu-10.44Ni-0.84Fe>Cu-10.48Ni-1.76Fe. Fe exists in theform of FeOOH and FeO in the product films, whilst Ni exists in the form of NiO, Ni(OH)2, andmetallic Ni in the product films. FeOOH promotes the enrichment of the Ni content and the formationof NiO. The product film of Cu-10.52Ni-1.26Fe with the best corrosion resistance contained thehighest content of FeOOH. In addition, the mechanism of FeOOH on the corrosion resistance has beendiscussed.
机译:利用电化学阻抗谱,势能极化曲线,X射线衍射和X射线光电子能谱研究了Cu-10Ni-Fex合金(x = 0.84、1.26、1.76)在3.5%NaCl溶液中的腐蚀特性。结果表明,耐蚀性的顺序为Cu-10.52Ni-1.26Fe> Cu-10.44Ni-0.84Fe> Cu-10.48Ni-1.76Fe。 Fe在产品膜中以FeOOH和FeO的形式存在,而Ni在产品膜中以NiO,Ni(OH)2和金属Ni的形式存在。 FeOOH促进Ni含量的富集和NiO的形成。具有最佳耐蚀性的Cu-10.52Ni-1.26Fe产品膜中所含的FeOOH含量最高。此外,已经讨论了FeOOH对耐蚀性的作用机理。

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