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| Degradation of alumina formed on Fe–15Cr–10Al alloy induced by chlorine and sulfur in atmospheres |
| PAN Taijun1†; NIU Yan2 |
1.School of Materials Science and Engineering; Jiangsu Polytechnic University;
Key Laboratory for Polymer Materials; Changzhou 213164
2.State Key Laboratory for Corrosion and Protection; Institute of Metal Research;
the Chinese Academy of Science; Shenyang 110016 |
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Cite this article:
PAN Taijun; NIU Yan. Degradation of alumina formed on Fe–15Cr–10Al alloy induced by chlorine and sulfur in atmospheres. Chin J Mater Res, 2008, 22(6): 606-610.
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Abstract The corrosion behavior of Fe–15Cr–10Al alloy was examined at 700 °C in the reducing H2--CO2 and H2--HCl--H2S--HClatmosphere. As a result, the minor addition of HCl and H2S to a H2--CO2 atmosphere induced the degradation of protective alumina and the growth of Fe, Cr and Al oxide mixtures on the surface of Fe–15Cr–10Al alloy, which was attributed to the formation of sulfides and chlorides in the scales during corrosion procedure. The equilibrium partial pressures of chlorine, oxygen and sulfur in the mixed gases were calculated to estimate the possible reactions between the alloy components and the multi–reactants, and their corrosion mechanisms were also interpreted.
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Received: 08 April 2008
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