Electrochemical Investigation of the Galvanic Corrosion of AM60 and AD62 Magnesium Alloy in 0.1 M NaCl Solution

Magdalene Edet Ikpi; Junhua Dong; Wei Ke

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Electrochemical Investigation of the Galvanic Corrosion of AM60 and AD62 Magnesium Alloy in 0.1 M NaCl Solution

机译：AM60和AD62镁合金在0.1 M NaCl溶液中的电化学腐蚀电化学研究

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The corrosion behaviour of AM60 and AD62 magnesium alloy in 0.1 M NaCl solution wasinvestigated by potentiostatic polarisation measurements. The microstructure was evaluated usingXRD and SEM. Cathodic hydrogen evolution, NDE, anodic dissolution of magnesium, the formationof magnesium hydride and possibly aluminium hydride were all restrained with Cd addition (AD62alloy). The presence of Cd in AD62 alloy suppresses the micro-galvanic couple effect existing betweenand secondary phases in the alloy, and increases the polarisation resistance arising from the sumeffect of the reduced current densities of all anodic and cathodic reactions.

机译：通过恒电位极化测量研究了AM60和AD62镁合金在0.1 M NaCl溶液中的腐蚀行为。使用XRD和SEM评估微观结构。阴极的析氢，NDE，镁的阳极溶解，氢化镁的形成以及可能氢化铝的形成都受到添加Cd（AD62合金）的限制。 Cd在AD62合金中的存在抑制了合金中和第二相之间存在的微电流耦合效应，并增加了所有阳极和阴极反应电流密度降低的总和所引起的极化电阻。

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《International Journal of Electrochemical Science》 |2015年第1期|共12页
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Magdalene Edet Ikpi; Junhua Dong; Wei Ke;
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Electrochemical Investigation of the Galvanic Corrosion of AM60 and AD62 Magnesium Alloy in 0.1 M NaCl Solution

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