The Analysis of the Selective Oxidation of Multicomponent Alloy

Bartłomiej Wierzba; Marek Danielewski

doi:10.4028/www.scientific.net/DDF.277.149

Paper Titles

Dependence of Diffusion Paths on Thermodynamic Factors in Ternary Systems
p.119

Simulation of Pressure Effects on Self-Diffusion in BCC Metals
p.125

The Effect of Point Defects Interaction on Hydrogen Atom Diffusion in FCC- and BCC-Metals
p.133

Numerical Simulation of Precipitates Evolution in Iron-Based Alloys
p.141

The Analysis of the Selective Oxidation of Multicomponent Alloy
p.149

Complex Phase Behavior of Systems with Negative Curvature Potentials
p.155

3D Monte Carlo Simulation of Phase Separation Kinetics in a Binary Metallic Alloy with Vacancy Mediated Diffusion: Effect of Initial Supersaturation
p.161

Size-Induced Freezing Effect in Monte-Carlo Simulations of Phase Separation Kinetics in Nanoparticles
p.167

Diffusion during Powder Metallurgy Synthesis of Titanium Alloys
p.177

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 277The Analysis of the Selective Oxidation of...

The Analysis of the Selective Oxidation of Multicomponent Alloy

Abstract:

The model of the heterogeneous reaction between the alloy and oxidant is shown. The alloy reacts with oxidant and forms oxide scale. The reaction rate is controlled by the interdiffusion in alloy and the chemical diffusion through the compact scale. In this work we extend the Wagner model by introducing i) the variable instantaneous rate constant, ii) the composition dependent diffusivities of the alloy components and iii) the finite geometry of the oxidized alloy. The model allows us to predict the life time of the alloy and the evolution of the components concentration. The comparison of Wagner’s results and our extended analysis is shown.