Surface Modification on Magnesium Alloys by Coating with Magnesium Fluorides

机译：氟化镁涂层对镁合金的表面改性

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A new technique has been developed for improving corrosion resistance on magnesium alloys. Specimens of AZ31 magnesium alloy were dipped into molten salt of NaBF_4 at 723 K for various times, and then cooled, rinsed with water, and dried in air. Corrosion resistance in the surface treated specimens was evaluated by salt immersion test using 1 % NaCl solution as a time for occurring filiform corrosion. On an un-treated AZ31 alloy, the time for starting the filiform corrosion was about 1.2 ks, while on the surface treated specimen, the time was prolonged into about 1300 ks. Moreover, the surface treated specimen showed corrosion resistance in low pH solutions, such as 1 % HNO_3 and HCl solutions.

机译：已经开发出一种新技术来改善镁合金的耐腐蚀性。将AZ31镁合金的试样在723 K的温度下浸入NaBF_4的熔融盐中不同的时间，然后冷却，用水冲洗并在空气中干燥。通过盐浸渍试验评估表面处理样品的耐腐蚀性，使用1％NaCl溶液作为发生丝状腐蚀的时间。在未经处理的AZ31合金上，开始丝状腐蚀的时间约为1.2 ks，而在经过表面处理的试样上，该时间延长至约1300 ks。此外，经表面处理的样品在低pH溶液（如1％HNO_3和HCl溶液）中显示出耐腐蚀性。

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来源
《Pacific Rim International Conference on Advanced Materials and Processing(PRICM 5) pt.1; 20041102-05; Beijing(CN)》|2004年|P.505-508|共4页
会议地点 Beijing(CN)
作者
A. Yamamoto; T. Ohse; H. Tsubakino;
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作者单位

Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan;

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原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
magnesium alloy; magnesium fluoride; corrosion resistance; salt immersion test; surface modification;

机译：镁合金;氟化镁;耐腐蚀性;盐浸试验;表面改性;

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Surface Modification on Magnesium Alloys by Coating with Magnesium Fluorides

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