Bismuth Sodium Titanate Based Materials for Piezoelectric Actuators

Materials

Klaus Reichmann²  Antonio Feteira³  Ming Li¹ 

[1] Advanced Materials Research Group, Department of Mechanical, Materials and Manufacturing Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, UK;;Institute of Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, Graz 8010, AustriaMaterials and Engineering Research Institute, Sheffield Hallam University, City Campus, Howard Street, Sheffield S1 1WB, UK;

关键词: piezoelectric actuator;    multilayer;    lead-free;    bismuth sodium titanate;   

DOI  :  10.3390/ma8125469

来源: mdpi

【 摘 要 】

The ban of lead in many electronic products and the expectation that, sooner or later, this ban will include the currently exempt piezoelectric ceramics based on Lead-Zirconate-Titanate has motivated many research groups to look for lead-free substitutes. After a short overview on different classes of lead-free piezoelectric ceramics with large strain, this review will focus on Bismuth-Sodium-Titanate and its solid solutions. These compounds exhibit extraordinarily high strain, due to a field induced phase transition, which makes them attractive for actuator applications. The structural features of these materials and the origin of the field-induced strain will be revised. Technologies for texturing, which increases the useable strain, will be introduced. Finally, the features that are relevant for the application of these materials in a multilayer design will be summarized.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.