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| Corrosion of NiCr alloys in oxidizing atmosphere containing HCl induced by KCl--ZnCl$_{2}$ salt deposit |
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| 中国科学院金属研究所 |
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Cite this article:
. Corrosion of NiCr alloys in oxidizing atmosphere containing HCl induced by KCl--ZnCl$_{2}$ salt deposit. Chin J Mater Res, 2004, 18(4): 337-342.
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Abstract The corrosion of pure nickel and chromium and of three NiCr alloys containing 10\%,
25\% and 50\% Cr in a HCl--containing oxidizing atmosphere with KCl--ZnCl$_{2}$
deposit at 600℃ was investigated. All the materials suffer from accelerated
corrosion with respect to their corrosion in the same atmosphere in the absence
of chloride deposit. In particular, both metals corroded more quickly than the
three NiCr alloys especially during the initial stage. The scales formed on the
five materials were very porous with cracks and composed of oxides or/and chlorides
of both metals as well as some Cr--Zn/K spinel. Moreover, the chlorides of both
metals were found at the metal--or alloy--scale interface.
Finally, the corrosion mechanism was discussed in terms of accelerated
oxidation induced by chlorides.
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Received: 31 August 2004
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1 R.Prescott, F.H.Stott, P.Elliott, Corrosion Sciences, 29(4) , 465(1989)
2 M.Spiegel, Materials and Corrosion, 50, 373(1999)
3 H.J.Grabke, E.Reese, M.Spiegel, Corrosion Sciences, 37(7) , 1023(1995)
4 H.H.Krause, I.G.Wright, V.K.Sethl, Heat-Resistant Materials, Proceedings of the First International Con-ference, Fontana, Wisconsin (USA/23-26 Sep. 1991) p.623
5 Y.Shinata, F.Takahashi, K.Hashiura, Materials Science and Engineering, 87, 399(1987)
6 LI Yuanshi, NIU Yan, LIU Gang, WU Weitao, Corrosion Sciences & Protection Technology, 12, 224(2000) (李远士,牛焱,刘刚,吴维(山文),腐蚀科学与防护技术,12, 224(2000) )
7 M.J.McNallan, W.W.Liang, J.M.Oh, C.T.Kang, Oxidation of Metals, 17, 371(1982)
8 A.Zahs, M.Spiegel, H.J.Grabke, Materials and Corrosion, 50, 561(1999)
发“9 V.A.C.Haanappel, T.Fransen, P.J.Gellings, High Temperature Materials and Processes, 10(2) , 92(1992) |
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