Oxidation-Erosion of Metals and Alloys: Models, Verification, and Prediction.

摘要

Models have been developed for synergistic interaction of oxidation and erosion of metals and alloys. The models are based on an extension of earlier work on paralinear kinetics in which oxidation of metal is assumed to be diffusion controlled, and erosion is assumed to result in a uniform removal of materials. Predictions of oxidation-erosion behavior as a function of temperature and erosion conditions have been made for several chromia- and alumina-forming alloys, which included the construction of two master plots for these alloys that allow distinction of oxidation- or erosion-demonited regime as a function of the kinetic rate constants. The models have also provided reasonable explanations of the results obtained in the oxidation-erosion experiments on pure nickel and cobalt. 14 refs., 5 figs. (ERA citation 13:040254)