Sol-gel process for the preparation of ultrafine PbTiO/sub 3/ powders

Tetrabutyl titanate and lead acetate are used as the precursors to prepare ultrafine lead titanate (PbTiO/sub 3/) powders through the sol-gel process. It is shown that powders with high purity concentration (99.67 wt.%), small particle size (average particle size 0.1 mu m), and narrow size distribution can be obtained. The sol-gel-derived gel was highly crystallized after heat treatment at 400 degrees C for 2 h. It is also found that Pb(CH/sub 3/CO/sub 2/)/sub 2/ can be effectively dehydrated at 190 degrees C.<
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