Effect of Arsenic Alloying on the Microstructure and Corrosion Properties of Mg-Al Alloy

AnWang; WeitaoJia; ChunlongCheng; QiChiLe; FanYang

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Effect of Arsenic Alloying on the Microstructure and Corrosion Properties of Mg-Al Alloy

机译：砷合金化对Mg-Al合金组织和腐蚀性能的影响

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We report that arsenic alloying significantly accelerates the corrosion process of Mg-Al alloy. Themicrostructure of Mg-Al-As alloy consists of α -Mg grains, β -Mg17Al12 particles, and Mg3As2particles. Gravimetric tests revealed that the average corrosion rates of Mg-Al-As and AZ80magnesium alloys are 75.48 mm/y and 7.06 mm/y. The acceleration of the corrosion process in MgAl-As alloy is mainly attributed to the Mg3As2 phase, which quickly hydrolyzes to form a Mg(OH)2film.

机译：我们报告说，砷合金化显着加速了Mg-Al合金的腐蚀过程。 Mg-Al-As合金的显微组织由α-Mg晶粒，β-Mg17Al12颗粒和Mg3As2颗粒组成。重量测试表明，Mg-Al-As和AZ80镁合金的平均腐蚀速率分别为75.48 mm / y和7.06 mm / y。 MgAl-As合金中腐蚀过程的加速主要归因于Mg3As2相，该相迅速水解形成Mg（OH）2膜。

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《International Journal of Electrochemical Science》 |2018年第9期|共12页
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AnWang; WeitaoJia; ChunlongCheng; QiChiLe; FanYang;
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Effect of Arsenic Alloying on the Microstructure and Corrosion Properties of Mg-Al Alloy

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