GRAIN BOUNDARY DIFFUSION OF Co AND Ni IN BICRYSTALLINE AND POLYCRYSTALLINE NiO | Zendy

F. Barbier | Zendy; M. Déchamps | Zendy

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GRAIN BOUNDARY DIFFUSION OF Co AND Ni IN BICRYSTALLINE AND POLYCRYSTALLINE NiO

Author(s) -

F. Barbier,

M. Déchamps

Publication year - 1988

Publication title -

le journal de physique colloques

Language(s) - English

Resource type - Journals

eISSN - 2777-3418

pISSN - 0449-1947

DOI - 10.1051/jphyscol:1988571

Subject(s) - non blocking i/o , crystallite , materials science , grain boundary , grain boundary diffusion coefficient , diffusion , metallurgy , condensed matter physics , chemistry , microstructure , thermodynamics , physics , biochemistry , catalysis

Grain boundary diffusion of Co and Ni has been studied in <001> and <011> symmetrical tilt NiO bicrystals. No preferential intergranular diffusion has been detected. It is thought that cation diffusion along grain boundaries is less than 103D, where D is the lattice diffusion coefficient, and not of the order of 105D as published. Moreover, it is unlikely that impurities are entirely responsible for the discrepancies

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