Corrosion of LY12 aluminum alloy in sodium chloride solution

Corrosion of LY12 aluminum alloy in sodium chloride solution

The corrosion behavior of LY12 alloy in sodium chloride solution and its electrochemical noise were reported. The deve|opment of the micro-pits on the ahoy surface was monitored by scanning electron microscopy,scanning tunneling microscopy, and electrochemical noise method. All the measurements show...

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Veröffentlicht in:Transactions of Nonferrous Metals Society of China 2003-06, Vol.13 (3), p.617-621
1. Verfasser: 程英亮 张昭 曹发和 李劲风 张鉴清 王建明 曹楚南
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扫描电子显微镜
氯化钠溶液
电化学噪声
铝合金
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description The corrosion behavior of LY12 alloy in sodium chloride solution and its electrochemical noise were reported. The deve|opment of the micro-pits on the ahoy surface was monitored by scanning electron microscopy,scanning tunneling microscopy, and electrochemical noise method. All the measurements show that the corrosion of LY12 alloy can be divided into two stages: a very reactive initial stage and a relative constant stable stage. The initial stage is corresponded to the adsorption of CI ions and its reaction with the oxide film and the dissolution of Mg containing particles. The stable stage is corresponded to the development of the micro-pits by the galvanic attack formed by Al-Fe-Cu-Mn containing particles and the matrix. The initial stage lasts about 2-3h while the stable stage dominates the whole corrosion process.
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The deve|opment of the micro-pits on the ahoy surface was monitored by scanning electron microscopy,scanning tunneling microscopy, and electrochemical noise method. All the measurements show that the corrosion of LY12 alloy can be divided into two stages: a very reactive initial stage and a relative constant stable stage. The initial stage is corresponded to the adsorption of CI ions and its reaction with the oxide film and the dissolution of Mg containing particles. The stable stage is corresponded to the development of the micro-pits by the galvanic attack formed by Al-Fe-Cu-Mn containing particles and the matrix. 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subjects 扫描电子显微镜
氯化钠溶液
电化学噪声
铝合金
title Corrosion of LY12 aluminum alloy in sodium chloride solution
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