Abstract
The high temperature scaling of alloys in gaseous environments constitutes a limitation to the development of more efficient energy conversion devices. Five principal corrosion problems — oxidation, sulphidation, hot corrosion, carburisation or metal dusting, and reaction with chlorine or chlorine-bearing gases — may be identified. The paper reviews the theory of alloy oxidation, considering the present state of alloy design and development, and the scope for improvement in performance. The particularly serious problems posed by sulphidation of conventional highly-developed HT alloys is examined, and the possibilities for designing new materials with a substantially improved performance, with reference to the potential of certain Group V-VI refractory metals is discussed. Finally consideration is given to the problems of hot corrosion and the other cited areas of current concern, indicating the main characteristics of such modes of corrosion, and the means for their control. It is concluded that while a rationale to alloy development for resistance to HT corrosion can be put forward, in certain aggressive environments more fundamental and systematic research is needed in order to be able to develop alloys or coatings with an adequate resistance.
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References
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© 1987 ECSC, EEC, EAEC, Brussels and Luxembourg
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Strafford, K.N. (1987). The Corrosion Behaviour of Alloys in High Temperature Gaseous Environments. In: Marriott, J.B., Merz, M., Nihoul, J., Ward, J. (eds) High Temperature Alloys. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1347-9_8
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DOI: https://doi.org/10.1007/978-94-009-1347-9_8
Publisher Name: Springer, Dordrecht
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