An approximate treatment of the transient state in the corrosion of binary alloys forming the most-stable oxide. Part I: Solid-solution alloys
- Universita di Genova (Italy); and others
The initial transient stage in the oxidation of binary alloys forming scales exclusively composed of the most stable oxide is examined by means of a simplified approach which avoids the numerical integration of the diffusion equation for the transport of the metal components in the alloy. At variance with previous solutions to this problem obtained by means of numerical methods, this treatment takes into account also the effect of the gas-scale reaction at the outer surface of the oxide. The concentration of the most-reactive component at the alloy surface changes gradually with time from the initial bulk value towards the corresponding steady-state value without involving any minimum, while the overall rate of the reaction presents a gradual transition from an initial nearly linear towards final parabolic behavior.
- OSTI ID:
- 468389
- Journal Information:
- Oxidation of Metals, Journal Name: Oxidation of Metals Journal Issue: 1-2 Vol. 47; ISSN 0030-770X; ISSN OXMEAF
- Country of Publication:
- United States
- Language:
- English
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