发明申请
US20080282536A1 Lead Zirconate Titanate with Iron/Tungstein Doping, Method of Producing a Piezoceramic Material with the Lead Zirconate Titanate, and Use of the Piezoceramic Material 失效
具有铁/钨掺杂的锆酸锆酸铅,用锆酸锆酸铅制造压电陶瓷材料的方法和使用压电陶瓷材料

Lead Zirconate Titanate with Iron/Tungstein Doping, Method of Producing a Piezoceramic Material with the Lead Zirconate Titanate, and Use of the Piezoceramic Material
摘要:
A piezoceramic composition has a nominal empirical formula of Pb1-aREbAEc[ZrxTiy(FefWw)z]O3. RE is a rare earth metal with a fraction b and AE is an alkaline earth metal with a fraction c. Iron is present with an iron fraction f·z, and tungsten with a tungsten fraction w·z. In addition, the following relationships apply: a 0; w>0; 0.1=f/w=5; x>0; y>0; z>0 and x+y+z=1. A method of producing a piezoceramic material using the piezoceramic composition has the steps: a) provision of a green ceramic body with the piezoceramic composition, and b) heat treatment of the green body, a piezoceramic of the piezoceramic material being produced from the piezoceramic composition. The heat treatment encompasses calcining and/or sintering. The piezoceramic composition undergoes compaction at below 1000° C. Metals which melt at low temperature (such as silver or a silver-palladium alloy with a low palladium content, for example) can therefore be sintered together with the piezoceramic composition.
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