发明名称 |
Monolithisches piezokeramisches Bauelement und Verfahren zu seiner Herstellung |
摘要 |
The invention relates to a method for polarising piezoelectric components, especially piezoelectric actuators, said components being made up of a number of piezoceramic layers with metal electrodes arranged in between. The inventive method is characterised by the following steps: a) a compressive stress (Tp) is applied to the component to be polarised before the polarisation process begins and until it has ended, said compressive stress counteracting the prolonging effect of the electric polarisation field to be applied and the value of the compressive stress (Tp) corresponding to Tp<Td and Tp>0 and preferably to Tp>/=Tb, Td being equal to the limit pressure determined by the deviation from the elastic lines and Tb being equal to the static pressure applied when the component is later operated; and b) an electric polarisation field is applied to the component, the field strength applied being greater than the coercive field strength for the component. |
申请公布号 |
DE19756182(C2) |
申请公布日期 |
1999.10.14 |
申请号 |
DE1997156182 |
申请日期 |
1997.12.17 |
申请人 |
SIEMENS AG |
发明人 |
CRAMER, DIETER;LUBITZ, KARL;SCHUH, CARSTEN;STEINKOPFF, THORSTEN;WOLFF, ANDREAS |
分类号 |
H01L41/083;H01L41/24;(IPC1-7):H01L41/22 |
主分类号 |
H01L41/083 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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