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海水海泥跃变区钢铁电化学腐蚀行为研究
张经磊, 侯保荣, 郭公玉, 杨芳英, 谢肖勃
中国科学院海洋研究所 青岛 266071
摘要:
于1993年1－7月，在室内模拟条件下研究钢铁试样在海泥-海水跃变区的电化学腐蚀特征。发现钢试样在该跃变区产生了电偶腐蚀，电偶极性在买验期间内发生逆转，试验前后电偶试样的稳定自由腐蚀电位都发生正移，且水中试样电位正移植大于泥中试样的正移值，还发现温度对各电化学参数无明显影响。
关键词:  海水  海泥  电偶腐蚀  钢铁
DOI：
分类号:
基金项目:国家自然科学基金和海洋局科学基金联合资助项目，49276272号。本课题还得到科学院“八五”院重大、重点项目和胜利油田的经费支持
STUDIES ON ELECTROCHEMICAL CORROSION BEHAVIOUR OF STEEL IN JUCTURE AREA BETWEEN SEA CLAY AND SEAWATER
Zhang Jinglei, Hou Baorong, Guo Gongyu, Yang Fangying, Xie Xiaobo
Institute of Oceanology, Academia Sinica, Qingdao 266071
Abstract:
Laboratory study of the electrochemical corrosion behaviour of steel in the jucture area between sea clay and seawater under simulated condition showed that (1) galvanic corrosion occurred between steel samples buried in sea clay and hung in seawater, (2) the polarity of the galvanic cell reversed during the test, (3) the stable free corrosion potential of galvanic samples moved toward the positive direction after the test, and the movement of the free corrosion potential of samples in seawater was more than that in clay, (4) the sea temperature had no obvious relationship with the other parameters under the testing condition.
Key words:  Sea water, Sea clay, Galvanic corrosion, Steel
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