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The relation between the parabolic rate constants for the internal oxidation of binary alloys in terms of weight gain or thickness |
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| Authors: | F Gesmundo F Viani Y Niu D L Douglass |
| Affiliation: | (1) Istituto di Chimica, Facoltà di Ingegneria, Università di Genova, Fiera del Mare, Pad. D, 16129 Genova, Italy;(2) Corrosion Science Laboratory, Institute of Corrosion and Protection of Metals, Wencui Road 62, 110015 Shenyang, China;(3) Department of Materials Science and Engineering, The University of California at Los Angeles, 90024 Los Angeles, CA |
| Abstract: | A calculation of the parabolic rate law for internal oxidation in binary alloys expressed in terms of weight gain shows that its dependence on the concentration of the most-reactive component is different from that predicted by the classical Wagner treatment for the rate constant expressed in terms of thickness of the internal oxidation zone. It is shown that the ratio between the two rate constants for a given system is a very sensitive function of the concentration of the reactive element in the alloy. |
| Keywords: | internal oxidation weight gain parabolic rate constants |
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