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金属学报  2011, Vol. 47 Issue (6): 697-705    DOI: 10.3724/SP.J.1037.2010.00705
  论文 本期目录 | 过刊浏览 |
模拟深海压力对2种低合金钢腐蚀行为的影响
刘杰1,李相波2,王佳1,3
1. 中国海洋大学化学化工学院, 青岛 266100
2. 中船重工七二五所青岛分部海洋腐蚀与防护重点实验室, 青岛 266101
3. 金属腐蚀与防护国家重点实验室, 沈阳 110016
EFFECT OF HYDROSTATIC PRESSURE ON THE CORROSION BEHAVIORS OF TWO LOW ALLOY STEELS
LIU Jie 1, LI Xiangbo 2, WANG Jia 1,3
1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100
2. Science and Technology on Marine Corrosion and Protection Laboratory, Luoyang Ship Material Research Institute (LSMRI), Qingdao 266101
3. State Key Laboratory for Corrosion and Protection, Shenyang 110016
全文: PDF(2693 KB)  
摘要: 通过腐蚀失重、电化学测试、锈层分析和微观形貌观察研究了海水压力对不同成分2种低合金钢(X和Y)腐蚀行为的影响. 结果表明, X钢更易受到海水压力的影响而被加速腐蚀.深海压力均加速了2种低合金钢的阳极溶解速度; 压力对于X钢的氧扩散还原过程影响很小,而海水压力的增加导致Y钢阴极电流密度降低的原因是腐蚀产物直接参与了阴极还原反应.2种钢均由低压下的均匀腐蚀变为高压下的局部腐蚀, 但腐蚀形貌有较大差异.高压下的X钢表面出现明显的“浅碟状”腐蚀坑, 而高压下的Y钢表面出现了明显的隧道形腐蚀坑.
关键词 深海压力 低合金钢 腐蚀失重测试 电化学测试 锈层分析 微观形貌    
Abstract:In this paper, the effect of hydrostatic pressure on the corrosion behaviors of two steels was investigated by weight loss test, electrochemical measurements, rust layer analysis and morphology observation in natural seawater environment with high–pressure in lab. The results showed that X steel was inclined to being corroded. With the increase of hydrostatic pressure, the corrosion resistance of two steels were deteriorated, which were attributable to the increase of the anodic reaction rate. Hydrostatic pressure had little effect on oxygen diffusion reductin process of X steel. Howeve, the cathodic current density of Y steel under higher hydrostatic pressure decreased because the coosion products were directly involved in cathodic reduction reaction. And with the increase of hydrostatic pressure, the morphology of two steels changed significantly and dfferently. Under high pressure, some shallo–dish shape localized corrosion appeared on the surface of X steel whereas on the surface of Y steel some tunnel localized crrsion appeared.
Key wordshydrostatic pressure of seawater    low alloy steel    weight loss test    elctrochemical measurements    rust layer analysis    mrphology observation
收稿日期: 2010-12-29      出版日期: 2011-06-11
ZTFLH:  TG172.82  
通讯作者: 王佳     E-mail: xuejieliuxiang1983@163.com
Corresponding author: WANG Jia     E-mail: xuejieliuxiang1983@163.com
作者简介: 刘杰, 男, 1983年生, 博士生

引用本文:

刘杰 李相波 王佳. 模拟深海压力对2种低合金钢腐蚀行为的影响[J]. 金属学报, 2011, 47(6): 697-705.
LIU Jie LI Xiangbo WANG Jia. EFFECT OF HYDROSTATIC PRESSURE ON THE CORROSION BEHAVIORS OF TWO LOW ALLOY STEELS. Acta Metall Sin, 2011, 47(6): 697-705.

链接本文:

http://www.ams.org.cn/CN/10.3724/SP.J.1037.2010.00705      或      http://www.ams.org.cn/CN/Y2011/V47/I6/697

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