Abstract
Yttrium aluminum garnet (YAG) powder was synthesized by a mixed solvothermal method under moderate conditions ( 260 – 290 ∘ C , 2–4 h) with inexpensive aluminum and yttrium hydroxides as the precursors, and a low-cost ethanol–water solution (the volume ratio of ethanol to water ⩾ 2 : 1 ) as the solvent. The presence of ethanol in mixed solvent is beneficial to the formation of YAG. The synthesized powder consists of well-dispersed and nearly spherical fine grains (80 nm on average) with a relatively narrow grain size distribution. The powder form is the most desirable for the compacting and sintering of YAG ceramics.
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