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| CORROSION BEHAVIOR OF CARBON STEEL IN H 2S-HCl-H2O AT 90℃ Ⅰ-The Effect of H2S Concentration on the Corrosion Behavior of Carbon Steel |
| TANG Junwen1, SHAO Yawei1, GUO Jinbiao2, ZHANG Tao1,MENG Guozhe1, WANG Fuhui1,3 |
1. Corrosion and Protection Laboratory,College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001
2. The Academy of Lanzhou Petrochemical Company, CNPC, Lanzhou 730060
3. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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Abstract The electrochemical behavior of low carbon steel in acidic simulation solutions containing different concentrations of H2S at 90℃ was investigated by mass loss method, electrochemical measurements and observations of scanning electron microscope (SEM) and X-ray radiation diffaction (XRD). The results showed that the cathodic depolarization was enhanced greatly and the corrosion rate of carbon steel increased remarkably with the increase of H2S concentration. The severe corrosion holes were observed on the carbon steel surface in the H2S-containing solutions. The corrosion products layer deposited on carbon steel were mainly composed of mackinawite, which became loose，easily cracked and sloughed off with increasing concentration of H2S.
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Received: 24 November 2009
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Cite this article:
TANG Junwen, SHAO Yawei, GUO Jinbiao, ZHANG Tao,MENG Guozhe, WANG Fuhui. CORROSION BEHAVIOR OF CARBON STEEL IN H 2S-HCl-H2O AT 90℃ Ⅰ-The Effect of H2S Concentration on the Corrosion Behavior of Carbon Steel. J Chin Soc Corr Pro, 2011, 31(1): 28-33.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2011/V31/I1/28
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