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交流电对X80钢在近中性环境中腐蚀行为的影响
Authors
万红霞
刘智勇
+3 more
宋东东
李晓刚
杜翠薇
Publication date
1 January 2017
Publisher
Abstract
通过数据采集、电化学测试、浸泡实验和表面分析技术研究了交流电对X80钢在近中性环境中腐蚀行为的影响。结果表明,交流电干扰下,随着交流电密度的增大,交流腐蚀形态发生变化,由全面腐蚀转变为局部腐蚀,且试样表面产生较多的点蚀坑。全波交流电正负半波交替干扰下,X80钢发生阴阳极极化,导致Fe的局部溶解和H的析出;负半波交流干扰下会导致析氢而发生氢致阳极溶解,产生的点蚀坑均较尖锐;正半波干扰下,只发生阳极溶解,产生的点蚀坑呈现凹形,且比较平滑。不同波形交流干扰下,X80钢表面产生的腐蚀产物不一致:全波和正半波干扰下,腐蚀产物较疏松且发生龟裂,无a-FeOOH;负半波交流干扰下,X80钢表面腐蚀产物较致密,腐蚀产物存在a-FeOOH,对基体具有一定的保护作用
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Last time updated on 22/01/2018