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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Investigation of surface oxide film on magnesium lithium alloy
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Investigation of surface oxide film on magnesium lithium alloy

机译：镁锂合金表面氧化膜的研究

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摘要

Magnesium and its alloys are very chemically active metals. Oxide film can be spontaneously formed on their surface in an ambient atmosphere. The oxide film on the surface of Mg-8Li alloy was characterized by X-ray photoelectron spectroscopy (XPS) analysis and electrochemical measurements. The results indicated that the surface oxide film formed in the air exhibited multiple layer structure, which consisted of the elements of Li, Mg and O. The concentrations of Mg decreased and Li increased from the bottom layer to top layer of the oxide film. Lithium oxides mostly enriched in the outer oxide layer. The more the potential deviated from the E_(corr), the more severe the oxide film was destroyed. Below the film breakdown potential, the surface oxide film can slow down the corrosion of Mg-8Li alloy.
机译：镁及其合金是非常化学活性的金属。可以在环境气氛中在其表面上自发形成氧化膜。用X射线光电子能谱（XPS）分析和电化学测量对Mg-8Li合金表面的氧化膜进行了表征。结果表明，空气中形成的表面氧化膜呈现多层结构，由Li，Mg和O的元素组成。Mg的浓度从氧化膜的底层到顶层降低，Li增加。氧化锂主要富集在外部氧化物层中。电位偏离E_（corr）的次数越多，氧化膜的破坏就越严重。低于膜击穿电位，表面氧化膜可以减缓Mg-8Li合金的腐蚀。

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