金属学报  1997, Vol. 33 Issue (12): 1256-1261

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70Cu—30Ni合金海水腐蚀产物膜形成过程

朱小龙;林乐耘;雷廷权

中国有色金属工业总公司有色金属研究总院207室;北京;100088;中国有色金属工业总公司有色金属研究总院;北京;100088;哈尔滨工业大学;哈尔滨;150001

PROCESS OF FORMATION OF CORROSION FILMS ON ALLOY 70Cu-30Ni IN SEAWATER

ZHU Xiaolong; LIN Leyun (General Research Institute for Nonferrous Metals; China Nonferrous Metals Industry Corporation; Beijing 100088); LEI Tingquan (Harbin Institute of Technology; Harbin 150001)

朱小龙;林乐耘;雷廷权. 70Cu—30Ni合金海水腐蚀产物膜形成过程[J]. 金属学报, 1997, 33(12): 1256-1261.
, , . PROCESS OF FORMATION OF CORROSION FILMS ON ALLOY 70Cu-30Ni IN SEAWATER[J]. Acta Metall Sin, 1997, 33(12): 1256-1261.

摘要 参考文献 相关文章 Metrics 全文: PDF(1368 KB)   摘要: 本文研究了70Cu－30Ni合金海水暴露不同时间腐蚀产物膜特征和成分变化。研究表明，该合金腐蚀产物膜内存在一个富Ni区，富Ni区随着暴露时间延长变宽且Ni的富集程度增加，富Ni腐蚀产物膜充当阳极，从而保护基体。长期暴露所形成的腐蚀产物膜出现裂纹或沟，这是由于膜下基体在这些位置存在结构或成分的变化使膜的生长速度减慢或者内应力导致膜的破裂。随着外层膜的溶解与脱落，原裂纹或沟成为凸出条纹，凸出条纹中Ni与Cu的浓度比高于条纹之间区域中Ni与Cu的平均浓度比，凸出条纹优先溶解使膜表面趋向平整。膜中碳量随暴露时间延长而增加，因此可以认为碳来源于海水而不是来自加工残碳膜。 关键词 ： 70CU－30Ni合金,  海水腐蚀,  腐蚀产物膜     Abstract：The characteristics and composition changes of the corrosion films of alloy 70Cu-30Ni immersed in seawater for different times were investigated.The results show that there is a Ni-rich zone in the films, which becomes wider and higher in the degree of Ni enrichment with increasing the immersed time. The film rich in Ni serves as an anode so as to protect the matrix. For the change of the structure or composition or for inner stress making the film broken, cracks or trenches appear in the film immersed in seawater for long time.With the solution and scaling off of the outer layer,the cracks or trenches become convex lines. Because the concentration ratio Ni / Cu at the convex lines is higher than average ratio Ni/Cu in the zone between convex lines,the preferred dissolution of convex lines leads the surface of the film to smoothness.The carbon in the film increases with increasing immersion time and can be thought to be from seawater not from residual carbon films. Key words： 70Cu-30Ni alloy    seawater corrosion    corrosion film      基金资助:国家自然科学基金!59290900;;金属腐蚀与防护国家重点实验室 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 朱小龙 林乐耘 雷廷权 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1997/V33/I12/1256 1IJsseling F P, Krouguan J M, Drolenga L J P. 5th International Congress on Marine Corrosion andFouling,Barcelona,1980: 146 2Gilbert P T.Mater Perform,1982;21:47 3Sanchez S R, Scgiffrin D J. Corros Sci, 1982; 22: 585 4Efird K D.Corrosion,1977;33:347 5Kato C,Castle J E,Ateya B C,Pickering H W.J Electrochem Soc,1980;127:1897 6Jsseling F P, Krouguan J M, Drolenga LJP. 5th International Congress on Marine Corrosion andFouling, Barcelona, 1980:146 7Castle J E, Patvizi M S, Corros Prev Control, 1986; 17: 1 8Kato C,Ateya B G,Castle J E,Pickering H W.J Electrochem Soc, 1980; 127: 1890 9Hack H P,Pickering H W.J Electrochem Soc,1991;138:690 10Blundy R G, Pryor M J. Corros Sci, 1972; 12: 65 11McGuire G E, Bacarella A L, Griess J C, Jr, Clausing R E, Hulett L D.J Electrochem Soc, 1978;125:1801 12KatoC,Pickering H W.J Electrochem Soc,1984;131:1219 13Zhu Xiaolong,Lin Leyun.Chin J Met Sci Technol, 1992;8: 192 14Efird K D,Lee T S.NACE National Conference.Houston,1978:24O [1] 申媛媛, 董耀华, 董丽华, 尹衍升. 微生物抑制5754铝合金的海水腐蚀行为[J]. 金属学报, 2020, 56(12): 1681-1689. [2] 张慧, 杜艳霞, 李伟, 路民旭. 不同环境介质中X70钢的交流腐蚀行为及腐蚀产物膜层分析[J]. 金属学报, 2017, 53(8): 975-982. [3] 许立宁,王贝,路民旭. 6.5%Cr钢在高温高压CO2环境下的腐蚀行为研究*[J]. 金属学报, 2016, 52(6): 672-678. [4] 曹国良 李国明 陈珊 常万顺 陈学群. 典型耐海水腐蚀钢中Ni和Cr耐点蚀作用的比较[J]. 金属学报, 2010, 46(6): 748-754. [5] 邹妍 郑莹莹 王燕华 王佳 . 低碳钢在海水中的阴极电化学行为[J]. 金属学报, 2010, 46(1): 123-128. [6] 孙建波 柳伟 常炜 张忠铧 李忠涛 于湉 路民旭. 低铬X65管线钢CO2腐蚀产物膜的特征及形成机制[J]. 金属学报, 2009, 45(1): 84-90. [7] 杨丽颖; 柳伟; 路民旭 . 氮元素对2Cr13不锈钢CO2腐蚀产物膜结构和电化学性能的影响[J]. 金属学报, 2006, 42(12): 1279-1284 . [8] 陈长风; 路民旭; 赵国仙; 白真权; 严密林; 杨延清 . N80油套管钢CO2腐蚀产物膜特征[J]. 金属学报, 2002, 38(4): 411-416 . Viewed Full text Abstract Cited   Shared      Discussed