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 0–10 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.
Original language | English |
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Pages (from-to) | 4119-4128 |
Number of pages | 10 |
Journal | Ceramics International |
Volume | 49 |
Issue number | 3 |
Early online date | 26 Sept 2022 |
DOIs | |
Publication status | Published - 1 Feb 2023 |
Bibliographical note
Funding Information:Chen Liu was supported by China Scholarship Council (NO. 201806125044 ) for 12 months of research at University of Birmingham.
Publisher Copyright:
© 2022
Keywords
- Li distribution in the BCZT-L matrix
- Li-doped BCZT ceramics
- Piezoelectric properties
- Processing and densification
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Process Chemistry and Technology
- Surfaces, Coatings and Films
- Materials Chemistry