The high temperature oxidation of nickel

The oxidation of pure Ni has been studied over a temperature range of 1173–1573 K under 1.01 bar oxygen. The oxidation kinetics, the oxide growth and the metal recess obey parabolic time relationships. The dependence of the parabolic rate constant for oxidation can be expressed as: K_p = 7.95 × 10⁻² exp (− 220.9/RT) with the activation energy in kJ mole⁻¹. An attempt is made to calculate K_p in terms of diffusion parameters. These calculated values compare well with those measured experimentally.