Method for preparing PZT-based composite piezoelectric ceramic and PZT-based composite piezoelectric ceramic

Abstract

The invention provides a method for preparing PZT-based composite piezoelectric ceramic. The method includes the following steps that firstly, graphene oxide is prepared; secondly, PZT piezoelectric powder is wrapped with graphene oxide; thirdly, pre-sintering is conducted; fourthly, fine grinding is conducted; fifthly, discharge plasma sintering is carried out. The PZT-based composite piezoelectric ceramic comprises PZT and graphene, and the PZT-based composite piezoelectric ceramic has the electrical conductivity ranging from 0.5*10<-6>S / m to 2.3*10<-5>S / cm. The invention provides a piezoelectric power generation device comprising the PZT-based composite piezoelectric ceramic and application of the PZT-based composite piezoelectric ceramic in piezoelectric power generation.

Description

technical field

[0001] The invention relates to the field of piezoelectric ceramic material preparation, in particular to a preparation method of PZT-based composite piezoelectric ceramics and PZT-based composite piezoelectric ceramics. Background technique

[0002] Since the discovery of perovskite lead zirconate titanate (PZT) piezoelectric ceramics, PZT has become the most widely used piezoelectric material due to its high electromechanical coupling coefficient, stable performance, low cost, and easy doping modification. . Since the use of the positive piezoelectric effect of piezoelectric materials for power generation has the advantages of environmental protection and energy saving, a large number of patents on the use of piezoelectric materials for piezoelectric power generation devices have been proposed in recent years, for example: CN105680724A records a modular underground A piezoelectric power generating device; CN201956927U records a piezoelectric power generati...

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