X52 MS管线钢在含Cl-和饱和H2S介质中腐蚀产物膜的演变
Evolution of Corrosion Films on X52-MS Pipeline Steel in Saturated H2S and Cl- Solution
摘 要
通过腐蚀失重法、线性电位扫描法以及场发射扫描电镜(FE-SEM)和X-射线衍射(XRD)等表面分析技术对酸性环境用X52 MS管线钢在H2S饱和的5% NaCl溶液中所形成的腐蚀产物膜的形貌、结构特征及物相组成进行了观察和分析。结果表明, 在本试验条件下, 腐蚀产物膜的主要成分由非晶态FeS逐步转变为四方相硫铁矿(mackinawite)FeS, 且随着时间的延长, 腐蚀产物膜厚度逐渐增加, 结构也越来越致密; 无论是平均腐蚀失重速率还是瞬时腐蚀电流密度Jcorr均随着时间的延长而降低, 相对致密的mackinawite腐蚀产物膜对试样有一定的保护性, 对X52 MS管线钢的均匀腐蚀能够起到一定的抑制作用。
湿H2S环境
腐蚀产物膜
X52 MS pipeline steel
wet hydrogen sulfide environment
corrosion product film
Abstract
The morphology, structure and composition of the corrosion product films on X52 MS pipeline steel in 5% NaCl solution with saturated H2S were investigated by weight loss method, surface analysis techniques such as field emission scanning electron microscopy (SEM) and X-ray Diffraction (XRD), electrochemical techniques such as linear potential sweep and electrochemical impedance spectroscopy. The results showed that, in the experimental conditions, the main composition of the corrosion product films was mackinawite FeS, and with the increase of time, the thickness of the corrosion product films increased gradually, and the structure became dense. In addition, not only the average corrosion rates of weight loss, but also the instant current density both reduced with the time increased. The relatively dense corrosion product films had some protection properties, which could inhibit the general corrosion of X52 MS pipeline steel.
中图分类号 TG174 DOI 10.11973/fsyfh-201510004
所属栏目 试验研究
基金项目 国家自然科学基金项目(51201119)
收稿日期 2015/3/5
修改稿日期
网络出版日期
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备注黄峰(1972-), 教授, 博士, 从事材料电化学及金属腐蚀与防护,
引用该论文: DONG Yang-yang,HUANG Feng,WANG Jing-jing,HUANG Fei,CHENG Hong-juan,WAN Yang. Evolution of Corrosion Films on X52-MS Pipeline Steel in Saturated H2S and Cl- Solution[J]. Corrosion & Protection, 2015, 36(10): 918
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参考文献
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【3】MENDOZA R, ALANIS M, PEREZ R, et al. On the processing of Fe2C2Mn2Nb steels to produce plates for pipelines with sour gas resistance[J]. Mater Sci Eng A, 2002, 337(1/2): 115-120.
【4】MA Y, CHENG L, LI Q, et al. The Influence of hydrogen sulfide on corrosion of iron under different conditions[J]. Corrosion Scienee, 2000, 42: 1669-1683.
【5】HERNNDEZ-ESPEJEL A, DOMNGUEZ-CRESPO M A, CABRERA-SIERRA R, et al. Investigations of corrosion films formed on API-X52 pipeline steel in acid sour media[J]. Corrosion Science, 2010, 52(2): 2258-2267.
【6】康永印, 袁曦, 黄金营, 等. X52钢在H2S/CO2饱和5% NaCl溶液中的腐蚀行为研究[J]. 材料保护, 2008, 41(5): 7-10.
【7】SHOESMITH D W, TAYLOR P, BALLY M G, et al. The formation of ferrous monosulfide polymorphs during the corrosion of iron by aqueous hydrogen sulfide at 21 ℃[J]. J Electrochem Soc, 1980, 127(5): 1007-1019.
【8】NACE TM0284 2003Evaluation of pipeline and pressure vessel steels for resistance to hydrogen induced cracking[S].
【9】曾荣昌, 韩恩厚. 材料的腐蚀与防护[M]. 北京: 化学工业出版社, 2006: 8-9.
【10】SHOESMITH D W, TAYLOR P, BALLEY M G, et al. The formation of ferrous monosulfide polymorphs during the corrosion of iron by aqueous hydrogen sulfide at 21 ℃[J]. J Electrochem Soc, 1980, 127(5): 611-620.
【11】ARZOLA S, MENDOZA F J, DURAN-ROMERO R, et al. Electrochemical behavior of API X70 steel in hydrogen sulfide-containing solutions[J]. Corrosion, 2006, 62(5): 433-443.
【12】NING J, ZHENG Y G, YOUNG D. Bruce brown and srdjan nesic: A thermodynamic study of hydrogen sulfide corrosion of mild steel[J]. Corrosion, 2014, 70: 4: 375-389.
【13】IOFA Z A, BATRAKOV V V, CHO-NGOK B. Influence of anion adsorption on the action of inhibitors on the acid corrosion of iron and cobalt[J]. Electrochim Acta, 1964, 9: 1645.
【14】SHOESMITH D W, TAYLOR P, BAILEY M G, et al. Electrochemical behavior of iron in alkaline sulphide solutions[J]. Electrochim Acta, 1978, 23: 903.
【15】SHOESMITH D W, BAILEY M G, IKEDA B. Electrochemical formation of mackinawite in alkaline sulphide solutions[J]. Electrochim Acta, 1978, 23: 1329.
【16】SALVAREZZA R C, VIDELA H A A J. The electrodissolution and passivation of mild steel in alkaline sulphide solutions[J]. Corrosion Science, 1982, 22(9): 815.
【17】SALVAREZZA R C, VIDELA H A, ARVIA A J. The electrodissolution behavior of mild steel in phosphate-sulphide solutions[J]. Corrosion Science, 1983, 23(7): 717.
【18】KANE R D. Roles of H2S in the behavior of engineering alloy[J]. Int Mater Rev, 1985, 30(11): 291-301.
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