| 摘要 |
PURPOSE:To easily obtain the title porcelain with the component of the formula by calcination of wet-ground raw material powder at low temperatures into a calcined product with the solid phase reaction completed, which is then pulverized to enhance the activity and formed into a sheet which is then calcined at specified low temperatures. CONSTITUTION:Using a medium-agitating mill, raw material powder is put to wet-grinding and mixing, drying and then calcination at 700-1000 deg.C to effect completion of the solid phase reaction. The resulting calcined product powder is put to wet-grinding using a medium-agitating mill to enhance the activity with an average size of <=0.6mum and made into a sheet form. This sheet is then calcined at 1000-1400 deg.C, thus easily obtaining the objective piezoelectric porcelain with the component of the general formula [x, y and z represent each mol%, x+y+z=100; a and b represent each mol% based on (x+y+z=100), a is 0.01-5 and b is 0-40]. |
