Co-sintered PZT ceramics for the piezoelectric transformers

被引：24

作者：

Sebastian, T. ^{[1
,2
]}

Kozielski, L. ^{[3
]}

Erhart, J. ^{[1
,2
]}

机构：

[1] Tech Univ Liberec, Dept Phys, CZ-46117 Liberec 1, Czech Republic

[2] Tech Univ Liberec, Piezoelect Res Lab, CZ-46117 Liberec 1, Czech Republic

[3] Univ Silesia, Inst Technol & Mechatron, PL-41200 Sosnowiec, Poland

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 08期

关键词：

Piezoelectric transformer; PZT ceramics; Functionally graded structure; FABRICATION;

D O I：

10.1016/j.ceramint.2015.03.274

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The co-sintered functionally graded PZT ceramic transformers working in a k(p)-mode in both input and output circuits were studied. Theoretical model was developed to describe the transformation ratio as a function of the frequency. Transformation ratio, efficiency and power density are measured for the set of samples with homogenous PZT and variable input/output PZT compositions for the low-power signal and compared with the derived formulae. The maximum efficiency is observed for the homogenous hard PZT compositions (type APC840). Contrary to the theoretical calculations, co-sintering hard PZT ceramics along with the soft PZT were not experimentally proven to produce a noticeable increase in the transformation ratio, efficiency and output power density probably due to the difference in optimal sintering temperature. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：9321 / 9327

页数：7

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