Chemistry:High-temperature oxidation
High-temperature oxidation refers to a scale-forming oxidation process involving a metallic object and atmospheric oxygen that produces corrosion at elevated temperatures.[1][2][3] High-temperature oxidation is a kind of High-temperature corrosion. Other kinds of high-temperature corrosion include high-temperature sulfidation and carbonization.[4][5] High temperature oxidation and other corrosion types are commonly modelled using the Deal-Grove model to account for diffusion and reaction processes.
Mechanism of oxidation
High temperature oxidation is generally occurs via the following chemical reaction between oxygen (O2) and a metal M:[2]
nM + 1/2kO2 = MnOk
According to Wagner's theory of oxidation, oxidation rate is controlled by partial ionic and electronic conductivities of oxides and their dependence on the chemical potential of the metal or oxygen in the oxide.[6]
References
- ↑ Perez, Nestor (2016), Perez, Nestor, ed., "High-Temperature Oxidation" (in en), Electrochemistry and Corrosion Science (Cham: Springer International Publishing): pp. 389–425, doi:10.1007/978-3-319-24847-9_10, ISBN 978-3-319-24847-9
- ↑ 2.0 2.1 "What is a High Temperature Oxidation? – Definition from Corrosionpedia" (in en). http://www.corrosionpedia.com/definition/6253/high-temperature-oxidation.
- ↑ Khanna, A. S. (2016), "Fundamentals of High Temperature Oxidation/Corrosion" (in en), High Temperature Corrosion (WORLD SCIENTIFIC): pp. 1–31, doi:10.1142/9789814675239_0001, ISBN 978-981-4675-22-2
- ↑ Birks, N.; Meier, Gerald H.; Pettit, F. S. (2006). Introduction to the high-temperature oxidation of metals (2nd ed.). Cambridge, UK: Cambridge University Press. ISBN 0-511-16162-X. OCLC 77562951.
- ↑ Khanna, Anand S. (2018), Kutz, Myer, ed., "Chapter 6 – High-Temperature Oxidation", Handbook of Environmental Degradation of Materials (Third Edition) (William Andrew Publishing): pp. 117–132, ISBN 978-0-323-52472-8
- ↑ Khanna, A. S. (2002-01-01). Introduction to High Temperature Oxidation and Corrosion. ASM International. ISBN 0-87170-762-4.
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