Abstract
The volume and grain boundary diffusion coefficients (Dv and δDgb) of oxygen at 1673 K in pure and Mg‐doped alumina were studied by using a resistive anode encoder of SIMS. The effect of Mg‐doping on Dv, was observed clearly. The differences on δDgb in pure and Mg‐doped alumina were about 3 orders and 1 order of magnitude, respectively. The Mg‐doping in alumina is useful for homogenizing grain boundary diffusion.
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