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Lead-free piezoceramic material of the potassium niobate sodium - - - system with manganese - doping, a method for producing a component with the piezoceramic material and use of the structural component
Lead-free piezoceramic material of the potassium niobate sodium - - - system with manganese - doping, a method for producing a component with the piezoceramic material and use of the structural component
The present invention relates to a piezoceramic material, comprising a perovskite - phase with nanbo3, the one from the range from 0,02 w -% to 1,0 w -% selected manganese - doping. Preferably, in addition to sodium, potassium, as a further alkali metal with a proportion of 0,45 mol -% to 0,5 mol -% contain. In the case of this composition is a system with a phase boundary morphotropic before. In this case, very good piezoelectric properties associated. In addition, a method for the manufacture of a piezoceramic component with the piezoceramic material with the following process steps: a) providing a green body with a piezoceramic starting composition of the piezoceramic material and b) heat treatment of the green body, wherein from the piezoceramic starting composition of the piezoceramic material of the component is created. The heat treatment comprises a calcining and / or a sintering of the piezoceramic composition. The piezoceramic component is, for example, an ultrasonic transducer or a piezoceramic transducers. In particular, the piezoceramic component is a multilayer - piezoelectric actuator, which is used to trigger of a fuel valve is used an internal combustion engine of a motor vehicle.
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