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中国腐蚀与防护学报  2003, Vol. 23 Issue (4): 211-216     
  研究报告 本期目录 | 过刊浏览 |
南海榆林海域环境因素对钢局部腐蚀的影响
刘大扬;魏开金;李文军
洛阳船舶材料研究所
INFLUENCE OF ENVIRONMENTAL FACTORS IN YULIN AREA OFTHE SOUTH CHINA SEA ON LOCALIZED CORROSION OF STEELS
Dayang Liu;Kaijin Wei;Wenjun Li
洛阳船舶材料研究所
全文: PDF(259 KB)  
摘要: 采用典型钢宏观海生物实海验证腐蚀试验,测试分析钢样锈 层中主要腐蚀细菌、FeS和钙盐沉淀物.结果表明,由于南海榆林海域水温较高,海生物一年 四季生长旺盛,在钢样表面呈不均匀附着,使钢样表面电化学不均匀性增大;榆林站钢样锈 层中几种好氧菌及厌氧的硫酸盐还原菌比温度较低的青岛站的高几倍至3个数量级,并呈聚 集分布;几种钢样腐蚀产物中的FeS含量榆林比青岛高01~1倍左右,南海榆林海域细菌局 部腐蚀效应较大,这是加剧钢的局部腐蚀的两个重要因素.
关键词 海洋环境局部腐蚀    
Abstract:The severe localized corrosion of steels in Yulin a r ea of the South China Sea was analyzed by the use of macroscopic testing of seaw ater corrosion of typical steels induced by marine organisms,testing of major co rrosive bacteria and FeS in the rust layer on steel specimens and testing of cal cium deposits in the rust layer on steel specimens.The results reveal that the m arine organisms grow vigorously all year round due to rather high temperature of seawater in this area and result in uneven fouling to the surface of steel speci mens,which increases the electrochemical heterogeneity of the surface of steel s pecimens,the amounts of several aerobic bacteria and anaerobic SRB in the rust l ayer on steel specimens exposed in Yulin testing station are several times to th ree orders of magnitude larger than those on steel specimens exposed in Qingdao testing station,where the temperature of seawater is lower,and show collective d istribution;the content of FeS in the corrosion product on steel specimens expo sed in Yulin testing station is 0.1 times to twice higher than that of steel spe cimens exposed in Qingdao testing station.High Content of FeS and severe localiz ed corrosion induced by bacteria are two important factors for aggravation of lo calized corrosion of steels in Yulin area of the South China Sea.
Key wordssteel    marine environment    localized corrosion
收稿日期: 2002-08-19     
ZTFLH:  TG172.5  
通讯作者: 刘大扬   
Corresponding author: Dayang Liu   

引用本文:

刘大扬; 魏开金; 李文军 . 南海榆林海域环境因素对钢局部腐蚀的影响[J]. 中国腐蚀与防护学报, 2003, 23(4): 211-216 .
Dayang Liu, Kaijin Wei, Wenjun Li. INFLUENCE OF ENVIRONMENTAL FACTORS IN YULIN AREA OFTHE SOUTH CHINA SEA ON LOCALIZED CORROSION OF STEELS. J Chin Soc Corr Pro, 2003, 23(4): 211-216 .

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2003/V23/I4/211

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