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, Kin Wing Kwok

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


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(Zrx,Ti1-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(Bi0.5Na0.5)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.
Original languageEnglish
Title of host publicationInternational Conference on Smart Materials and Nanotechnology in Engineering
Publication statusPublished - 1 Dec 2007
EventInternational Conference on Smart Materials and Nanotechnology in Engineering - Harbin, China
Duration: 1 Jul 20074 Jul 2007


ConferenceInternational Conference on Smart Materials and Nanotechnology in Engineering


  • BNT-BT
  • Lead free ceramic
  • Ultrasonic motor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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