The Journal of Chemical Physics · 1957 · 77 citations · 5 references
Natural SciencesMaterials EngineeringMaterials ScienceMetallurgyPhysical ChemistrySurface ScienceDiffusion In SolidsDiffusion ProcessesMetalsSolid-state DiffusionSurface DiffusionDiffusion In OxidesDiffusion In Polycrystalline SolidsDiffusion KineticsDiffusion Through OxidesLattice DiffusionNickel OxidesNickel-based AlloysTemperature Dependence Of Diffusion
Diffusion coefficients for nickel in polycrystalline and monocrystalline nickel oxides have been measured by the surface-activity method from 1000 to 1400°C in air. Within experimental uncertainty the values D=4.4×10—4 exp(—44.2/RT) fit both cases. These results indicate that the oxidation of nickel under comparable conditions of T and P proceeds via lattice diffusion of Ni through NiO.
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