Lead free BNT ceramics as driving element in traveling wave type ultrasonic motor

Zuoba Yu; Ka Cheung Chan; Jifeng Guo; J. Y. Dai; Bo Wang; X. P. Jiang; K. W. Kwok

doi:10.1117/12.779832

1 November 2007 Lead free BNT ceramics as driving element in traveling wave type ultrasonic motor

Zuoba Yu, Ka Cheung Chan, Jifeng Guo, J. Y. Dai, Bo Wang, X. P. Jiang, K. W. Kwok

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 642325 (2007) https://doi.org/10.1117/12.779832
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Ultrasonic motor (USM) as a new type of driving motor has many good features compared with conventional electromagnetic motor. However, due the content of Pb in the driving element piezoelectric ceramics, Pb(Zr_x,Ti_1-x)O₃ (PZT), the application of USM will be restricted from the viewpoint of environmental requirement. In this paper lead free piezoceramics, Mn doped 0.94(Bi_0.5Na_0.5)TiO₃ -0.06BaTiO₃(BNT-BT), was used as driving element in ultrasonic motor in replacing PZT. Though the piezoelectric property of BNT-BT ceramic is inferior to that of PZT, the USM with BNT-BT driving element shows promising result and potential to replace PZT ceramic in application of ultrasonic motor.

Citation Download Citation

Zuoba Yu, Ka Cheung Chan, Jifeng Guo, J. Y. Dai, Bo Wang, X. P. Jiang, and K. W. Kwok "Lead free BNT ceramics as driving element in traveling wave type ultrasonic motor", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 642325 (1 November 2007); https://doi.org/10.1117/12.779832

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