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HIGH TEMPERATURE CORROSION OF 310SS IN GAS MIXTURE OF H_2S/ H_2/CO_2 |
LI Lingchuan(Tsinghua University; Beijing 100084); ZHU Rizhang(University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-06-27; in revised form 1995-10-1 0) |
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Cite this article:
LI Lingchuan(Tsinghua University; Beijing 100084); ZHU Rizhang(University of Science and Technology Beijing; Beijing 100083)(Manuscript received 1995-06-27; in revised form 1995-10-1 0). HIGH TEMPERATURE CORROSION OF 310SS IN GAS MIXTURE OF H_2S/ H_2/CO_2. Acta Metall Sin, 1996, 32(3): 284-288.
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Abstract The corrosion of 3 10SS in gas mixture of 0.4H2S / H2 / 7%CO2 at 600℃was in the form of sulfidation. The mass gain due to corrosion obeyed parabolic rate law for the initial 50 h but subsequently lower rate was observed for long time exposure up to 250 h. Such change in kinetics corresponded to structure modification of the innermost layer of chromium sulfide from its particle distribution to a continuous layer. The scale consisted of the outermost layer of FeS, the middle layer of FeCr2S4 and the innermost layer of Cr3S4. Correspondent: LI Lingchuan, Department of Materials Science and Engineering, Tsinghua University, Beijing100084
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Received: 18 March 1996
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