Please use this identifier to cite or link to this item:
https://doi.org/10.1039/c3ra43429j
Title: | Structure and properties of hot-pressed lead-free (Ba0.85Ca 0.15)(Zr0.1Ti0.9)O3 piezoelectric ceramics | Authors: | Ye, S. Fuh, J. Lu, L. Chang, Y.-L. Yang, J.-R. |
Issue Date: | 21-Nov-2013 | Citation: | Ye, S., Fuh, J., Lu, L., Chang, Y.-L., Yang, J.-R. (2013-11-21). Structure and properties of hot-pressed lead-free (Ba0.85Ca 0.15)(Zr0.1Ti0.9)O3 piezoelectric ceramics. RSC Advances 3 (43) : 20693-20698. ScholarBank@NUS Repository. https://doi.org/10.1039/c3ra43429j | Abstract: | Randomly-oriented and textured (Ba0.85Ca0.15)(Zr 0.1Ti0.9)O3 (BCZT) ceramics are prepared by a hot-pressing (HP) method. The phase structure, microstructure, and electrical properties are systematically investigated. Structural analysis shows a decrease in tetragonality of the hot-pressed samples. The orientation of the as-processed ceramics is studied by X-ray diffraction and electron backscatter diffraction, revealing an increase in texture of the hot-pressed textured BCZT ceramics. Microstructure characterization demonstrates that the hot-pressing can greatly improve the densification of the BCZT ceramics. Dielectric constant measurement obeys a modified Curie-Weiss law. The relaxor-like behavior is decreased in hot-pressed samples. The Curie temperatures of the hot-pressed BCZT (BCZT-HP) and the hot-pressed BCZT with texture templates (BCZT-T-HP) ceramics are greatly increased to 76 °C and 90 °C, respectively. The optimum piezoelectric properties for the BCZT-HP and BCZT-T-HP ceramics are d 33 = 510 pC N-1, kp = 44%, d31 = -182 pC N-1, k31 = 23% and d33 = 580 pC N -1, kp = 49%, d31 = -204 pC N-1, k31 = 31%, respectively. Therefore, the BCZT-HP and BCZT-T-HP ceramics are promising lead-free piezoelectric ceramics which can be used in higher temperature than their counterparts prepared by conventional sintering. © The Royal Society of Chemistry 2013. | Source Title: | RSC Advances | URI: | http://scholarbank.nus.edu.sg/handle/10635/85677 | ISSN: | 20462069 | DOI: | 10.1039/c3ra43429j |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.