Title: Piezoelectric driving device of functional gradient structure and its preparing method
Application Number: 200610114005 Application Date: 2006.10.24
Publication Number: 1945869 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01L41/08;H01L41/18;H01L41/22;H02N2/00
Applicant(s) Name: Beijing Univ. of Science and Technology Address:
Inventor(s) Name: Zhang Hailong;Zhang Boping;Wang Dan
Attorney & Agent: liuru e
Abstract:
    This invention relates to a piezoelectric drive device and its preparation method for a function grads structure, which applies a powder sinter method to composite PZT piezoelectric ceramics and Ag to form a piezoelectric ceramic compound material with varied Ag composition grads by altering Ag content one layer by one layer, coats Ag electrode on the up and down surfaces of the material and cuts it to molding to get a piezoelectric driver of the PZT/Ag functional grads structure, the sinter temperature of the material is 900-1200deg.C and the maximum content of Ag is 15vol%.
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