研究了碳钢、低Cr钢在不同条件下形成CO2腐蚀产物膜的微观形貌、成分和结构特征.结果表明,N80(碳钢)、1Cr-L80形成的腐蚀产物膜主要由FeCO3晶体堆垛而成,而3Cr-L80、5Cr-L80的表层则形成大面积的含Cr化合物,主要为Cr(OH)3和Cr2O3.这些Cr的化合物脱水后比较疏松,容易形成龟裂.在静态条件下,碳钢和含Cr钢的腐蚀产物膜均具有分层结构,碳钢外层与内层腐蚀产物膜的成分变化不大,主要为Fe、Ca碳酸复盐.含Cr钢的内层腐蚀产物膜中出现Cr元素的富集,外层主要为Fe、Ca碳酸复盐.随着Cr含量的增加,材料的腐蚀产物膜向非晶态转变.在静态条件下,低Cr钢比碳钢的腐蚀速率稍大;在动态(1.5 m/s)条件下,含Cr钢的腐蚀速率明显低于碳钢,而且腐蚀速率随着Cr含量的增加而下降.
参考文献
| [1] | ZHENG Jiashen, Fault-Block Oil & Gas Field, 3(1), 62(1996)(郑家燊,断块油气田,3(1),62(1996)) |
| [2] | ZHANG Xueyuan, WANG Fengping, CHEN Zhuoyuan, DU Yuanlong, Oilfield Chemistry, 14(2), 190(1997)(张学元,王凤平,陈卓元,杜元龙,油田化学,14(2),190(1997)) |
| [3] | T.Hong, Y.H.Sun, W.P. Jepson, Corros. Sci., 44, 101(2002) |
| [4] | M.Nordsveen, S.Nesic, R.Nyborg, A Stangeland, Corrosion, 59(5), 443(2003) |
| [5] | A.Ikeda, M.Ueda, S.Mukai, CO2 Behavior of Carbon and Cr Steels. [in] Advances in CO2 Corrosion [C],Edited by R.H.Hausler, H.P. Giddard(NACE, Houston, Texas, vol.1, 1984), p.39 |
| [6] | M.B.Kermani, Development of Superior Corrosion Resistance 3% Cr Steels for Downhole Applications. [in]Corrosion 2003 [C], Houston, Texas, paper no. 116 |
| [7] | H Takabe, M Ueda, The Formation Behavior of Corrosion Protective Films of Low Cr Bearing Steels in CO2Environments. [in] Corrosion 2001[C], Houston, Texas, paper no. 66 |
| [8] | K.Nose, H.Asahi, P.I.N.Statoil, J.Martin, Corrosion Properties of 3% Cr Steels in Oil and Gas Environments.[in] Corrosion 2001[C], Houston, Texas, paper no. 82 |
| [9] | H.Takabe, M.Ueda, Corrosion Resistance of Low Cr Bearing Steel in Sweet and Sour Environments. [in]Corrosion 2002 [C], Denver, Colorado, paper no. 41 |
| [10] | M.B.Kermani, J.C.Gnozales, Development of Superior Corrosion Resistance 3% Cr Steels for Downhole Applications. [in] Corrosion 2003 [C], Houston, Texas, paper no. 116 |
| [11] | G.Schmitt, D.Engeles, SEM/EDX Analysis of Corrosion Products for Investigations on Metallurgy and Solution Effects in CO2 Corrosion. [in] Corrosion 1988 [C], San Diego, California, paper no. 149 |
| [12] | K.Videm, J.Kvarekvaal, T.Perez, G.Fitzsimons, Surface Effects on the Electrochemistry of Iron and Carbon Steel Electrodes in Aqueous CO2 Solutions. [in] Corrosion 1996 [C], Houston, Texas, paper no. 1 |
| [13] | F.D.de Moraes, J.R.Shadley, J.F.Chen, E.F.Rybicki, Characterization of CO2 Corrosion Product Scales Related to Environmental Conditions. [in] Corrosion 2000 [C], Orlando, Florida, paper no. 30 |
| [14] | A.Dugstad, Mechanism of Protective Film Formation During CO2 Corrosion of Carbon Steel. [in] Corrosion1998 [C], San Diego, California, paper no. 31 |
| [15] | G.Schmitt, CO2 Corrosion of Steels: An Attempt to Range Parameters and Their Effects. [in] Advances in CO2 Corrosion [C], Edited by R.H.Hausler, H.P. Giddard(NACE, Houston, Texas, vol. 1, 1984), p. 1 2 |
| [16] | T.Murata, E.Sato, R.Matsuhashi, Factors Controlling Corrosion of Steels in CO2-Saturated Environments,[in] Advances in CO2 Corrosion [C], Edited by R.H.Hausler, H.P. Giddard (NACE, Houston, Texas, vol.1,1984), p.64 |
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