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接地网防腐蚀用Al-Zn复合涂层的防腐蚀性能试验分析

Liu Xiaoming,Gao Yunpeng,Zhao Xiaochun

Inner Mongolia Electric Power（2012）

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Abstract
采用热喷涂技术是近年来电力系统接地网防腐蚀的重要方法。热喷涂Al涂层能够起到减缓腐蚀的效果,但其对土壤中的Cl-敏感,容易造成点蚀。Al-Zn复合涂层既能够克服Al涂层对Cl-敏感的缺点,又能够发挥更好的抗腐蚀效果。通过对选用不同配比的Al-Zn复合涂层进行防腐蚀性能试验,证明Al、Zn质量分数分别为85%和15%的Al-15Zn复合涂层具有较低的腐蚀速率,同时具有较好的导电性,适合对接地网实施防腐蚀治理。
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Key words
corrosion rate,conductivity,Al-Zn composite coating,hot spray,grounded grid,electrochemistry,corrosion resistance
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