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材料工程  2014 

交流电频率对X65钢在CO32-/HCO3-溶液中腐蚀行为的影响

DOI: 10.11868/j.issn.1001-4381.2014.11.015, PP. 85-89

Keywords: X65钢,交流电频率,腐蚀行为,腐蚀速率

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Abstract:

通过极化曲线测试、浸泡实验和表面分析技术研究了不同交流电频率对X65钢在CO32-/HCO3-溶液中腐蚀行为的影响。研究表明在30~1000Hz范围内,除200Hz外,低交流电频率时(≤300Hz),随交流电频率的减小,其钝化区宽度明显变窄,点蚀击破电位负移,维钝电流密度增大,临界钝化电流密度增大;高交流电频率时(>300Hz),频率对X65钢的钝性影响很弱。X65钢的腐蚀速率随交流电频率的增加而减小,低交流电频率作用时,X65钢的腐蚀速率随交流电频率增加快速减小,高交流电频率时,其腐蚀速率随交流电频率的增加略减小。

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