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中国腐蚀与防护学报  2003, Vol. 23 Issue (2): 99-102     
  研究报告 本期目录 | 过刊浏览 |
常用铸铁材料海水腐蚀行为的研究
夏兰廷;韦华;朱宏喜
太原重型机械学院
STUDY OF CORROSION BEHAVIOR ON COMMON CAST IRON MATERIALS EXPOSED TO SEAWATER
Lanting Xia;Hua Wei;Hongxi Zhu
太原重型机械学院
全文: PDF(136 KB)  
摘要: 对常用铸铁材料在实海和流动海水条件下的腐蚀性能进行 了测试,分析了铸铁中不同石墨形态、基体组织、低合金化对铸铁腐蚀性能的影响机理.结 果表明:片状石墨铸铁耐腐蚀性能优于球状石墨的铸铁;球状石墨铸铁平均腐蚀率最小,但 具有强烈的点蚀倾向;铸铁在实海中的腐蚀行为以化学-电化学溶解为主,流动海水中的冲 蚀-磨蚀进一步加剧其化学-电化学溶解.
关键词 实海流动海水腐蚀行为石墨形态点蚀    
Abstract:The corrosion properties of common cast iron materi als in static (flowing velocity is about 0.1 m/s)and flowing seawater were teste d,and effects of graphite morphology,matrix microstructure and low alloying trea tment on corrosion properties of cast irons were analyzed.The experimental resul ts indicate that the corrosion-resistance property of flake graphite samples is superior to that of spherical graphite samples.The average corrosion rate of sph erical graphite samples,compared with other samples,was little,but its tendency of pitting corrosion is intensively obvious.For samples in static and low flowin g seawater (flowing velocity is more than 3 m/s),chemistry-electrochemistry d issolution mechanism is almost wholly responsible for their corrosion behavior.A s to sampl es in high flowing seawater (flowing velocity is equal to or more than 7 m/s),er osion-ablation behavior further accelerates chemical-electrochemical dissolution .
Key wordsstatic seawater    flowing seawater    corrosion behavior    gr aphite morphology    pitting corrosion
收稿日期: 2002-04-28     
ZTFLH:  TG172.82  
通讯作者: 夏兰廷     E-mail: yjszsb@tyhmi.edu.cn
Corresponding author: Lanting Xia     E-mail: yjszsb@tyhmi.edu.cn

引用本文:

夏兰廷; 韦华; 朱宏喜 . 常用铸铁材料海水腐蚀行为的研究[J]. 中国腐蚀与防护学报, 2003, 23(2): 99-102 .
Lanting Xia, Hua Wei, Hongxi Zhu. STUDY OF CORROSION BEHAVIOR ON COMMON CAST IRON MATERIALS EXPOSED TO SEAWATER. J Chin Soc Corr Pro, 2003, 23(2): 99-102 .

链接本文:

https://www.jcscp.org/CN/      或      https://www.jcscp.org/CN/Y2003/V23/I2/99

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