| 简介 |
The invention relates to a piezoceramic composition with a nominal empirical formula Pb 1-a RE b AE c AL d [Zr x Ti y (Ni n W w ) z ] O 3 . RE rare-earth metal portion b with a a rare earth metal, an alkali metal and an alkaline earth metal with a alkaline earth metal portion c AE alkali metal portion d AL with a. Nickel and tungsten with a tungsten content is with a nickel share n. z. z present w. It, the following relationships : a 0 ; w > 0 ; 0.1 0 ; y > 0 ; z x + y + z = 1 and > 0. Secondly it is also specified a method for the production of a piezoceramic component with a piezoceramic material using the piezoceramic composition having the following method steps : a) providing a ceramic green body with the piezoceramic composition and b) heat treating the green body, wherein from the piezoceramic composition of the piezoceramic material of the component is created. The heat treating comprises a calcining and/or a sintering the piezoceramic composition. The piezoceramic composition compacted under 1000 °C. Therefore metals can, which melt at a low temperature (e.g., silver or a silver palladium alloy Low palladium portion ) are sintered together with the piezoceramic composition. The member is, for example, an ultrasonic transducer or bending transducer. In particular, the component is a... |
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