旋转圆盘电极方法研究铝合金在NaCl中的腐蚀行为  

Corrosion Behavior of Aluminum Alloy in NaCl Solution Using Rotating Disk Electrode System

作　　者：李波 白洁 文屹 李义 邵春 肖仁贵[4] LI Bo;BAI Jie;WEN Qi;LI Yi;SHAO Chun;XIAO Rengui(Electric Power Research Institute of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Bijie Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Bijie 551799,China;Anshun Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Anshun 561099,China;School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州电网有限责任公司电力科学研究院,贵州贵阳550002 [2]贵州电网有限责任公司毕节供电局,贵州毕节551799 [3]贵州电网有限责任公司安顺供电局,贵州安顺561099 [4]贵州大学化学与化工学院,贵州贵阳550025

出　　处：《机械》2023年第4期25-32,共8页Machinery

基　　金：贵州电网有限责任公司课题:高腐蚀环境下电网输变电设备腐蚀机理及防腐延寿关键技术研究与应用示范(GZKJXM20191302)。

摘　　要：铝合金因具备诸多优良性能而被广泛应用于工业设施,然而铝合金在复杂的服役环境易发生腐蚀。本文探究铝合金在NaCl溶液中在不同流速下的腐蚀行为以及腐蚀产物对于铝合金腐蚀速度的影响。结果表明,转速的增加会加快铝合金的腐蚀速度,其中转速主要推动了阳极极化进程,而对阴极极化影响不大。NaCl溶液中,铝合金的腐蚀产物为铝的氧化物,并且发生了均匀腐蚀。此外,在NaCl溶液中铝合金随动力学极化测试次数增加所累积的氧化膜,会不断提高其耐腐蚀性。Aluminum alloys are widely used in industrial facilities because of their excellent properties.However,aluminum alloys are prone to corrosion in complex service environments.This study is to investigate the corrosion behavior of aluminum alloy in NaCl solution at different flow rates and the effect of corrosion products on the corrosion rate of aluminum alloy.The results show that the increase of rotating speed will accelerate the corrosion rate of aluminum alloy.Rotating speed mainly promotes the anodic polarization process but has little effect on the cathodic polarization.In NaCl solution,the corrosion product of aluminum alloy is aluminum oxide,and uniform corrosion occurs over it.In addition,the accumulated oxide film of aluminum alloy will continuously improve its corrosion resistance as the number of dynamic polarization tests increases.

关 键 词：铝合金 腐蚀 动力学 腐蚀速率 

分 类 号：TU395[建筑科学—结构工程]