Directional properties and performance in lead free piezoelectric materials

International Seminars of Frontiers in Materials Science UPM-CIE Moncloa

11/03/2013

Title: Directional properties and performance in lead free piezoelectric materials

Date: Thursday 21th at 09:30

Place: E.T.S. Civil Engineering, basement 1

Speaker: Keith Bowman

Free admission



Summary

Piezoelectric materials are used for a variety of actuator and sensor applications; with the most common material being Lead Zirconate Titanate (PZT). However, environmental concerns have prompted a search for lead-free alternatives. Inducing a preferred orientation (texture) is one method to improve the piezoelectric performance.

Piezoelectric materials have two forms of texture, ferroelastic and crystallographic, that contributes to the total preferred orientation. Crystallographic texture is induced during sample processing, while ferroelastic texture is induced using post processing such as electrical poling.

Unlike crystallographic texture, ferroelastic texture has an upper bound equaling the multiplicity of a specific pole. In this talk I will introduce the connection between directional properties and preferred orientation and describe the implications of our results for performance of piezoelectrics



Further information and contact details:
Dr. José Ygnacio Pastor, Organizer and Coordinator Scientific
Department of Material Science. Universidad Politecnica de Madrid
E.T.S. Civil Engineering, First Floor. Profesor Aranguren Road, E28040–Madrid
T. (+34) 913 366 684. F. (+34) 913 366 680. jypastor@mater.upm.es

Tag: Materials for the Future    Source: Universidad Politécnica de Madrid

Event date:

21/03/2013 - 21/03/2013