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The microstructure and chemistry of 2mol.% and 5mol.% cobalt-oxide-doped Ce 0.8 Gd 0.2 O 1.9 sintered at different temperatures were examined by a combination of electron energy-loss spectroscopy and energy-filtering and high-resolution transmission electron microscopy. Co grain boundary excess was evaluated. It is found that Co solubility in Ce 0.8 Gd 0.2 O...
The effect of cobalt oxide as sintering aid for CeO2 and Ce0.9Gd0.1O1.95 powders was studied as a function of initial powder particle size. The sintering effect of cobalt oxide, measured as the difference in temperature of maximum shrinkage rate between undoped and 1 cat% cobalt oxide doped powders, decreased with initial particle size. Almost no effect was found for the smallest particle sizes investigated...
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