Galvanic Corrosion Behevior of X65/316L Couple in Simulated Production Water
摘 要
采用电化学方法研究了X65/316L电偶对在模拟油田产出水环境中的电偶腐蚀行为。结果表明, 在pH值为7.15的模拟油田产出水中, 当阴阳极面积比为2、1和0.5时, 电偶电位在-708~-735 mV之间, 随着阴阳极面积比的增大, 电偶电位正移, 阳极电偶电流密度增大, 但阴极电偶电流密度的变化范围不大。(SCE)电偶腐蚀效应随阴阳极面积比的增大而增大。阴阳极面积比为1时, 电偶电流密度随pH值的减小而增大。
Abstract
The galvanic corrosion behavior of X65 coupled with 316L stainless steel in simulated production water was investigated by electrochemical methods. The results show that when the area ratios of X65/316L were 2, 1 and 0.5, the couple potentials of X65 and 316L in the simulated production water with pH 7.15 were in the range of -708 mV to -735 mV(SCE). When the area ratio increased, the anodic galvanic current density increased, while the cathodic galvanic current density almost was not changed. The galvanic effect increased with increasing the cathode/anode area ratio. When the area ratio was 1∶1, the galvanic current density increased with decreasing the pH value.
中图分类号 TG174
所属栏目 试验研究
基金项目
收稿日期 2011/12/4
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备注宗广霞, 工程师, 硕士,
引用该论文: ZONG Guang-xia,ZHANG Yang,FANG Jun-feng,XUE Zhi-jun. Galvanic Corrosion Behevior of X65/316L Couple in Simulated Production Water[J]. Corrosion & Protection, 2012, 33(7): 589
被引情况:
【1】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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【3】Chen W C, Petersen C W. Corrosion performance of welded CRA-lined pipes for flow lines[J]. SPE Prod Eng, 1992, 7(4):375-378.
【4】Varela F E, Kurata Y, Sanada N. The influence of temperature on the galvanic corrosion of a cast iron-stainless steel couple[J]. Corros Sci, 1997, 39(4):775-788.
【5】Tahara Akira, Kodama Toshiaki. Potential distribution measurement in galvanic corrosion of Zn/Fe couple by means of Kelvin probe[J]. Corros Sci, 2000, 42:655-673.
【6】Abreu C M, Cristoobal M J, Montemor M F. Galvanic coupling between carbon steel and austenitic stainless steel in alkaline media[J]. Electrochi Acta, 2002, 47(13):2271-2279.
【7】Yin Z F, Yan M L, Bai Z Q, et al. Galvanic corrosion associated with SM80SS steel and Ni-based alloy G3 couples in NaCl solution[J]. Electrochi Acta, 2008, 53(22):6285-6292.
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【9】宋诗哲. 腐蚀电化学研究方法[M]. 北京: 化学工业出版社, 1988:193.
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