The corrosion behavior of the 110S tube steel in the environments of high H2 S and CO2 content was inves- tigated by using a high-temperature and high-pressure autoclave, and the corrosion products were characterized by scanning electron microscopy and X ray diffraction technique. The results showed that all of the corrosion products under the test conditions mainly consisted of different types of iron sulfides such as pyrrhotite of Fe0.95 S, mackinaw- ite of FeS0.9, Fe0. 985 S and FeS, and the absence of iron carbonate in the corrosion scales indicated that the corrosion process was controlled by H2S corrosion. The corrosion rate of the 110S steel decreased firstly and then increased with the rising of temperature. The minimum corrosion rate occurred at 110 ℃. When the H2 S partial pressure PH2s below 9 MPa, the corrosion rate declined with the increase of PH2s. While over 9 MPa, a higher PH2s resulted in a faster corrosion process. With the increasing of the CO2 partial pressure, the corrosion rate had an increasing trend. The morphologies of the corrosion scales had a good accordance with the corrosion rates.
参考文献
| [1] | Shoesmith D W;Taylor P;Bailey M G et al.Formation of Ferrous MonosulfJde Polymorphs During the Corrosion of Iron by Aqueous Hydrogen Sulfide at 21 "C[J].Journal of the Electrochemical Society,1980,127(05):1007. |
| [2] | Shoesmith D W;Rummery T E;Bailey M G et al.Electro chemical Formation of Sulfur at Stainless Steel Surfaces[J].Journal of the Electrochemical Society,1980,127(01):27. |
| [3] | Kudo T;Tsuge H;Moroishi T .Stress Corrosion Cracking Re sistance of 22:Cr Duplex Stainless Steel in Simulated SourEnvironments[J].Corrosion,1989,45(10):831. |
| [4] | Schmitt G .Effect of Elemental Sulfur on Corrosion in Sour Gas Systems[J].Corrosion,1991,47(04):285. |
| [5] | AI-Hajji J N;Reda M R .Corrosion Behavior of Low Residual Carbon Steels in a Sour Environment[J].Corrosion,1993,49(05):363. |
| [6] | Ikeda A;Ueda M;Mukai S.CO2 Corrosion Behavior and Mechanism of Carbon Steel and Alloy Steel[A].Houston.Is.n.J,1983:45. |
| [7] | Ma Houyi;Cheng Xiaoliang;Li Guiqiu et al.The Influence of Hydrogen Sulfide on Corrosion of Iron Under Different Condi tions[J].Corrosion Science,2000,42(10):1669. |
| [8] | Ahelev E;Ramanarayanan T A;Bernasek S L .Iron Corrosion in COz/Brine at Low H2S Concentrations:An Electrochemical and Surface Science Study[J].Journal of the Electrochemical Society,2009,156(09):C331. |
| [9] | Masamura K;Hashizume S;Sakai J et al.Polarization Behav ior of High Alloy Octg in CO2 Environment as Affected by Chlorides and Sulfides[J].Corrosion,1987,43(06):359. |
| [10] | Pots B F M;Kapusta S D;'John R C.Improvements on De Waard Milliams Corrosion Prediction and Applications to Cor-rosion Management[A].Houston:Es.n.l,2002:235. |
| [11] | Ikeda A;Makai S;Ueda M.Prevention of C()2 Corrosion of Line Pipe and Oil Country Tubular Goods[A].Houston:[s.n.],1984:289. |
| [12] | Ikeda A;Ueda M;Makai S.Influence of Environmental Fac-tors on Corrosion in CO2 Source Well[A].Houston:[s.n.],1985:126. |
| [13] | ZHAO Guo-xian;YAN Mi-lin;LU Min-xu et al.Materials Evaluation in CO2 Corrosion Environment (in Chi nese)[J].Corrosion Sci-ence and Protection Technology,2000,12(04):240. |
| [14] | 张雷,丁睿明,杨建炜,路民旭.高含H2S/CO2介质中X60钢腐蚀产物膜分析[J].北京科技大学学报,2009(05):563-567. |
| [15] | Yin Z F;Zhao W Z;Bai Z Q et al.Corrosion Behavior of SM 80SS Tube Steel in Stimulant Solution Containing HzS and COz[J].Electrochimica Acta,2008,53:3690. |
| [16] | Nesic S;Postlethwaite J;Olsen S .Electrochemical Model for Prediction of Corrosion of Mild Steel in Aqueous Carbon Diox-ide Solutions[J].Corrosion,1996,52(04):280. |
| [17] | Srinivasan S;Kane R D.Prediction of Corrosivity of COz/ HzS Production Environments[A].Houston:[s.n.],1996:11. |
| [18] | 吕祥鸿,赵国仙,张建兵,韩勇,许文研.低Cr钢在H2S/CO2环境中的腐蚀行为研究[J].材料工程,2009(10):20-25,31. |
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