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

Kun Guo; Meysam Sharifzadeh Mirshekarloo; Ming Lin; Kui Yao; Shuting Chen; Francis Eng Hock Tay

doi:10.1016/j.ceramint.2018.11.016

Microstructure and piezoelectric properties of thermal sprayed Bi_0.5(Na_0.70K_0.20Li_0.10)_0.5TiO₃ ceramic coatings

Kun Guo, Meysam Sharifzadeh Mirshekarloo, Ming Lin, Kui Yao, Shuting Chen, Francis Eng Hock Tay

Research output: Contribution to journal › Article › Research › peer-review

14 Citations (Scopus)

Abstract

The microstructure of Bi_0.5(Na_0.70K_0.20Li_0.10)_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.

Original language	English
Pages (from-to)	3570-3573
Number of pages	4
Journal	Ceramics International
Volume	45
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2018.11.016
Publication status	Published - 15 Feb 2019
Externally published	Yes

Keywords

Lead-free ceramics
Microstructure
Piezoelectric properties
Thermal spray

Access to Document

10.1016/j.ceramint.2018.11.016

Cite this

@article{bb285e0a355440c5884892a713493c37,

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

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.",

keywords = "Lead-free ceramics, Microstructure, Piezoelectric properties, Thermal spray",

author = "Kun Guo and {Sharifzadeh Mirshekarloo}, Meysam and Ming Lin and Kui Yao and Shuting Chen and Tay, {Francis Eng Hock}",

year = "2019",

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doi = "10.1016/j.ceramint.2018.11.016",

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T1 - Microstructure and piezoelectric properties of thermal sprayed Bi0.5(Na0.70K0.20Li0.10)0.5TiO3 ceramic coatings

AU - Guo, Kun

AU - Sharifzadeh Mirshekarloo, Meysam

AU - Lin, Ming

AU - Yao, Kui

AU - Chen, Shuting

AU - Tay, Francis Eng Hock

PY - 2019/2/15

Y1 - 2019/2/15

N2 - 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.

AB - 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.

KW - Lead-free ceramics

KW - Microstructure

KW - Piezoelectric properties

KW - Thermal spray

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