Microstructure and piezoelectric properties of thermal sprayed Bi0.5(Na0.70K0.20Li0.10)0.5TiO3 ceramic coatings

Microstructure and piezoelectric properties of thermal sprayed Bi0.5(Na0.70K0.20Li0.10)0.5TiO3 ceramic coatings
Title:
Microstructure and piezoelectric properties of thermal sprayed Bi0.5(Na0.70K0.20Li0.10)0.5TiO3 ceramic coatings
Other Titles:
Ceramics International
DOI:
10.1016/j.ceramint.2018.11.016
Publication Date:
05 November 2018
Citation:
Ceramics International, https://doi.org/10.1016/j.ceramint.2018.11.016, Vol. 45 3570–3573, 2019
Abstract:
The microstructure of Bi0.5(Na0.70K0.20Li0.10)0.5TiO3 (BNKLT) coatings fabricated by thermal spray method was closely examined by TEM, revealing the coexistence of rhombohedral and tetragonal perovskite main phases, and very minor secondary phases, while all amorphous phase was crystallized after heat treatment. Obtaining coexisting rhombohedral and tetragonal perovskite phases after the thermal spray process involving the melting-recrystallization and heat treatment process resulted in piezoelectric ceramic coating with excellent electrical and electromechanical properties. The effective piezoelectric coefficient d33 of the heat-treated BNKLT coating reached 86 pm/V with substrate clamping, measured over macroscale by laser scanning vibrometer.
License type:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Funding Info:
This work is partially supported by Singapore Maritime Institute, under Maritime Sustainability R&D Programme, Project ID: SMI-2015-MA-07 (IMRE/16-7P1125), and Asset Integrity & Risk Management (AIM) R&D Programme, Project ID: SMI-2015-OF-01 (IMRE/15-9P1115).
Description:
ISSN:
0272-8842
1873-3956
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