潮差区-全浸区电联接碳钢试样暴露30d的腐蚀行为  

Corrosion Behavior of Electrically Connected Carbon Steel Samples Exposed to Tide Zone and Immersion Zone for 30d

作　　者：杨海洋[1,2] 黄桂桥 韩冰 张启富 YANG Haiyang;HUANG Guiqiao;HAN Bing;ZHANG Qifu(Central Iron&Steel Research Institute,Beijing 100081,China;Qingdao NCS Testing&Corrosion Protection Technology Co.,Ltd.,Qingdao 266071,China;China Iron&Steel Research Institute Group,Beijing 100081,China)

机构地区：[1]钢铁研究总院,北京100081 [2]青岛钢研纳克检测防护技术有限公司,青岛266071 [3]中国钢研科技集团有限公司,北京100081

出　　处：《腐蚀与防护》2020年第11期65-68,共4页Corrosion & Protection

基　　金：国家自然科学基金(51771057)。

摘　　要：将碳钢试样置于青岛潮差区-全浸区进行了为期30d的海洋环境暴露试验。结果表明,暴露30d时,试样在这两个区域的最大电位差约为100mV,极化特征明显;全浸区试样的电流净输出,随着试样高度的增加,输出电流增大;潮差区试样的电流净流入,随着保护试样高度的增加,输入电流增大;涨潮时试样的电流绝对值大于落潮时试样的;全浸区试样的腐蚀速率均高于潮差区试样的,全浸区试样的腐蚀峰值出现在均潮位线下方,潮差区试样的腐蚀峰值出现在中潮位区域。Carbon steel samples were placed in Qingdao tidal range-full immersion area for a 30-day marine environment exposure test.The results show that the maximum potential difference between the samples in these two regions was about 100 mV when exposed for 30 days,and the polarization characteristics were obvious.The net current output of the sample in the full immersion increased with the increase of the sample height;the net current inflow of the sample in the tidal range zone increased with the increase of the protection sample height.The absolute value of the current of the sample at high tide was greater than that of the sample at low tide;the corrosion rate of samples in the full immersion zone was higher than that in the tidal range.The corrosion peak of the sample in the full immersion zone appeard below the tidal level line,and the corrosion peak of the sample in the tidal range appeard in the middle tide zone.

关 键 词：海水环境 电联接 碳钢 腐蚀 

分 类 号：TG174[金属学及工艺—金属表面处理]