Abstract
The solid state sintering of yttrium aluminum garnet (YAG) without any additive at 1873 K could not be achieved beyond 90% of theoretical density. Higher temperature was not tried to avoid abnormal grain growth in the material. To densify further, cobalt nitrate was added to alumina–yttria stoichiometric mixture in various proportion by solution infiltration method. The samples were sintered at 1873 K in air to achieve full density. The as-sintered microstructure revealed no abnormal grain growth.
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