G3钢和TP110SS钢在环空保护液中的电偶腐蚀
Galvanic Corrosion of G3-TP110SS Steel Couples in Annular Protective Fluid
摘 要
为预防G3油管钢和TP110SS套管钢之间的电偶腐蚀, 并给生产提供指导性建议, 采用电化学测试技术研究了环空保护液pH值、温度对G3钢-TP110SS钢电偶腐蚀的影响。结果表明:G3钢和TP110SS钢在环空保护液中将分别作为阴极和阳极发生电偶腐蚀。随着环空保护液pH值的增大, 电偶电位的升高, 电偶腐蚀速率减小; 温度的升高导致电偶电位降低, 电偶腐蚀速率增大。
电偶电位
pH值
温度
galvanic corrosion
galvanic potential
pH
temperature
Abstract
In order to prevent the galvanic corrosion between G3 steel and TP110SS steel, the effects of pH and temperature on the rate of galvanic corrosion were studied by electrochemical methods, and it could offer some important suggestions to production. The results showed that G3 steel-TP110SS steel couples suffered galvanic corrosion in annular protective fluid, G3 steel was cathode and TP110SS steel was anode respectively. With the elevation of pH value, the galvanic potential increased, and the galvanic corrosion rate decreased. As the temperature increased, the galvanic potential decreased and the galvanic corrosion rate increased.
中图分类号 TG172.9
所属栏目 试验研究
基金项目 国家重大专项(No.2008ZX05017-003-04-02)资助
收稿日期 2011/9/14
修改稿日期
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备注王立达, 讲师,
引用该论文: LIU Gui-chang,LIU Shi-qiang,HOU Tian-jiang,WANG Li-da,CAO Liang,YAN Jiang-hua,CHEN Xiu-ling. Galvanic Corrosion of G3-TP110SS Steel Couples in Annular Protective Fluid[J]. Corrosion & Protection, 2012, 33(8): 672
被引情况:
【1】刘飞,黄金营,周仕明,杨红岐,邓天安, "P110钢和TP110SS钢在含不同饱和气体NaCl溶液中的腐蚀行为",机械工程材料 40, 31-34(2016)
【2】任呈强,鲍明昱,王万国,曾德智,施太和, "含CO2和H2S地层水中17-4不锈钢与C110钢间的电偶腐蚀",机械工程材料 39, 6-9(2015)
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参考文献
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【2】Mansfeld F. The relationship between galvanic current and dissolution rates[J]. Corrosion, 1973, 29(10):403-405.
【3】罗兆红, 龙萍, 杨兆伟, 等. 扩散控制条件下电偶腐蚀效应的一种表达式[J]. 腐蚀与防护, 1996, 17(4):162-164.
【4】严密林, 李鹤林. G3油管与SM8OSS套管在CO2环境中的电偶腐蚀行为研究[J]. 天然气工业, 2009, 29(2):111-116.
【5】刘烈炜, 徐东林, 张报飞, 等. TP110SS/G3钢在H2S/CO2环境中的电偶腐蚀[J]. 石油化工腐蚀与防护, 2008, 25(1):13-15.
【6】Blasco T E, Igual M A, Garcia A J. Effect of temperature on the galvanic corrosion of a high alloyed austenitic stainless steel in its welded and non-welded condition in LiBr solutions[J]. Corrosion Science, 2007, 49:4472-4476.
【7】陈兴伟, 吴建华, 王佳, 等. 电偶腐蚀影响因素研究进展[J]. 腐蚀科学与防护技术, 2010, 22(4):363-366.
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