水熱合成粉末を用いた配向性PZT焼結体の作製

概要

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The grain-oriented PZT ceramics were fabricated by tape-casting method using powders synthesized by a hydrothermal reaction, and the piezoelectric properties of ceramics were measured. Cyclohexanone was the most suitable solvent from the view point of dispersion of PZT powder in a slurry, and the addition of 100 mg/g-PZT of an acrylic binder was necessary for dispersion and strength of the tape before sintering. It was possible to fabricate green tapes in which PZT grains having a cubic shape were oriented along a- or c-axis. However, the degree of grain-orientation decreased considerably by sintering. The electromechanical coupling factor (k_<31>) and piezoelectric constant (-d_<31>) of the grain-0riented PZT ceramics were about 10% higher than those of ceramics fabricated by an ordinary procedure using a hydrothermally synthesized powder.
社団法人日本セラミックス協会の論文
1990-08-01