| 摘要 |
PURPOSE:To obtain the title powder of piezoelectric material capable of low- temperature baking, enabling Ag-Pd alloy more inexpensive than platinum to be used as internal electrode by adding Nb, Sb, Ta and La in the form of each alkoxide to a raw material powder mixture. CONSTITUTION:For example, powder of PbO, ZrO2 and TiO2 is mixed and ground, in a wet mill, with a solution prepared by dissolving in a solvent such as benzene alkoxide(s) of small amount of at least one kind of added metal selected from Nb, Sb, Ta and La. The resultant product is filtered, dried and then calcined at ca.200-250 deg.C followed by mixing and grinding again in a wet mill and then filtration and drying, thus obtaining the objective calcined powder. The powder can be baked at low temperatures (ca.1100 deg.C), therefore, an electrode material such as Ag-Pd alloy may be used in place of platinum in the production of lamination-type piezoelectric elements from said powder. |
