The sintering aid for the non lead type piezoelectric ceramics, production manner null of the non lead type piezoelectric ceramics and the non lead type piezoelectric

摘要

PPROBLEM TO BE SOLVED: To provide a lead-free piezoelectric ceramic sinterable at low temperatures. PSOLUTION: There is provided a sintering aid for producing a lead-free piezoelectric ceramic including a compound represented by the composition formula, x(BiSB0.5/SBNaSB0.5/SBTiOSB3/SB)-y(BaTiOSB3/SB)-z(SrTiOSB3/SB) (wherein x+y+z=1) as a main component. The additive comprises oxides of bismuth and zinc, and the balance boron oxide. The BNT-BT-ST-based piezoelectric ceramics can be densified at the firing temperature of ≤1,100°C by using the above sintering additive. As a result, piezoelectric devices can be made by using the lead-free piezoelectric ceramic, thus preventing damage to natural environment. PCOPYRIGHT: (C)2009,JPO&INPIT