Processing, microstructure and piezoelectric properties of Li-doped BCZT ceramics

Chen Liu; Ji Zou; Xinwei Wang; Tailin Zhang; Guoyang Ye; Tim Button; Jon Binner

doi:10.1016/j.ceramint.2022.09.292

Processing, microstructure and piezoelectric properties of Li-doped BCZT ceramics

Chen Liu^*
, Ji Zou^*
, Xinwei Wang
, Tailin Zhang
, Guoyang Ye
, Tim Button
, Jon Binner

^*Corresponding author for this work

School of Physics

University of Birmingham
Wuhan University of Technology
Harbin Institute of Technology

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

23 Scopus citations

Abstract

Li₂CO₃ is a promising additive to reduce the sintering temperature for (Ba_0.85Ca_0.15) (Zr_0.1Ti_0.9)O₃ (BCZT) ceramics, however, the solubility of Li₂CO₃ in water and the high volatility of Li₂O at elevated temperatures make the processing and densification of BCZT-Li₂CO₃ ceramics (known as BCZT-L) challenging. In our work, an optimized processing route was developed to obtain dense and flat BCZT-L ceramics made with 0–10 mol% of Li₂CO₃ and involving sintering at 1300 °C–1400 °C. The chemical and structural evolution of BCZT-L ceramics during sintering with and without a BCZT powder bed are comprehensively documented and the distribution of Li in the matrix has been observed through TOF-SIMS to explain the effects of Li doping on the piezoelectric properties. The d₃₃ and k_p of BCZT-L initially increased with Li content, but then decreased with excess Li. The decreased d₃₃ and k_p with excess Li is associated with Li aggregation in the BCZT matrix.

Original language	English
Pages (from-to)	4119-4128
Number of pages	10
Journal	Ceramics International
Volume	49
Issue number	3
DOIs	https://doi.org/10.1016/j.ceramint.2022.09.292
State	Published - 1 Feb 2023

Keywords

Li distribution in the BCZT-L matrix
Li-doped BCZT ceramics
Piezoelectric properties
Processing and densification

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10.1016/j.ceramint.2022.09.292

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title = "Processing, microstructure and piezoelectric properties of Li-doped BCZT ceramics",

abstract = "Li2CO3 is a promising additive to reduce the sintering temperature for (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 (BCZT) ceramics, however, the solubility of Li2CO3 in water and the high volatility of Li2O at elevated temperatures make the processing and densification of BCZT-Li2CO3 ceramics (known as BCZT-L) challenging. In our work, an optimized processing route was developed to obtain dense and flat BCZT-L ceramics made with 0{\textendash}10 mol\% of Li2CO3 and involving sintering at 1300 °C{\textendash}1400 °C. The chemical and structural evolution of BCZT-L ceramics during sintering with and without a BCZT powder bed are comprehensively documented and the distribution of Li in the matrix has been observed through TOF-SIMS to explain the effects of Li doping on the piezoelectric properties. The d33 and kp of BCZT-L initially increased with Li content, but then decreased with excess Li. The decreased d33 and kp with excess Li is associated with Li aggregation in the BCZT matrix.",

keywords = "Li distribution in the BCZT-L matrix, Li-doped BCZT ceramics, Piezoelectric properties, Processing and densification",

author = "Chen Liu and Ji Zou and Xinwei Wang and Tailin Zhang and Guoyang Ye and Tim Button and Jon Binner",

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AU - Liu, Chen

AU - Zou, Ji

AU - Wang, Xinwei

AU - Zhang, Tailin

AU - Ye, Guoyang

AU - Button, Tim

AU - Binner, Jon

PY - 2023/2/1

Y1 - 2023/2/1

N2 - Li2CO3 is a promising additive to reduce the sintering temperature for (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 (BCZT) ceramics, however, the solubility of Li2CO3 in water and the high volatility of Li2O at elevated temperatures make the processing and densification of BCZT-Li2CO3 ceramics (known as BCZT-L) challenging. In our work, an optimized processing route was developed to obtain dense and flat BCZT-L ceramics made with 0–10 mol% of Li2CO3 and involving sintering at 1300 °C–1400 °C. The chemical and structural evolution of BCZT-L ceramics during sintering with and without a BCZT powder bed are comprehensively documented and the distribution of Li in the matrix has been observed through TOF-SIMS to explain the effects of Li doping on the piezoelectric properties. The d33 and kp of BCZT-L initially increased with Li content, but then decreased with excess Li. The decreased d33 and kp with excess Li is associated with Li aggregation in the BCZT matrix.

AB - Li2CO3 is a promising additive to reduce the sintering temperature for (Ba0.85Ca0.15) (Zr0.1Ti0.9)O3 (BCZT) ceramics, however, the solubility of Li2CO3 in water and the high volatility of Li2O at elevated temperatures make the processing and densification of BCZT-Li2CO3 ceramics (known as BCZT-L) challenging. In our work, an optimized processing route was developed to obtain dense and flat BCZT-L ceramics made with 0–10 mol% of Li2CO3 and involving sintering at 1300 °C–1400 °C. The chemical and structural evolution of BCZT-L ceramics during sintering with and without a BCZT powder bed are comprehensively documented and the distribution of Li in the matrix has been observed through TOF-SIMS to explain the effects of Li doping on the piezoelectric properties. The d33 and kp of BCZT-L initially increased with Li content, but then decreased with excess Li. The decreased d33 and kp with excess Li is associated with Li aggregation in the BCZT matrix.

KW - Li distribution in the BCZT-L matrix

KW - Li-doped BCZT ceramics

KW - Piezoelectric properties

KW - Processing and densification

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M3 - 文章

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SN - 0272-8842

VL - 49

SP - 4119

EP - 4128

JO - Ceramics International

JF - Ceramics International

IS - 3

ER -

Processing, microstructure and piezoelectric properties of Li-doped BCZT ceramics

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Keywords

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