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Optimizing the piezoelectric properties of Ba0·85Ca0·15Zr0·10Ti0·90O3·lead-free ceramics via two-step sintering.

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Title: Optimizing the piezoelectric properties of Ba0·85Ca0·15Zr0·10Ti0·90O3·lead-free ceramics via two-step sintering.
Authors: Shi, Shengfang1 (AUTHOR) shi23@ujs.edu.cn, Hashimoto, Hideki2 (AUTHOR), Sekino, Tohru3 (AUTHOR)
Source: Ceramics International. Apr2023, Vol. 49 Issue 8, p12293-12300. 8p.
Subjects: Sintering, Lead-free ceramics, Ceramics, Curie temperature, Grain size, Microstructure
Abstract: The two-step sintering of lead-free Ba 0 · 85 Ca 0 · 15 Zr 0 · 1 Ti 0·9 O 3 ·(BCZT) ceramics was investigated as a way to enhance its piezoelectric properties. The variations in grain size as a function of the calcination and sintering conditions and its effect on performance is discussed. Results indicate that as the calcination and first-step sintering temperatures increased, grain size became large and was independent of the second sintering step. Large grains were responsible for the enhanced piezoelectric properties by causing lattice distortion, larger domains, and easy motion of domain walls. The BCZT ceramic calcined at 1200 °C and sintered at 1540 °C without holding and then cooled to 1400 °C and held at 1400 °C for 4 h exhibited optimal performance with the highest remnant polarization P r ∼13.5 μC/cm2, the largest piezoelectric constant d 33 ∼ 529 pC/N at room temperature, and the highest Curie temperature T c ∼125 °C. Two-step sintering has been turned out to be an effective method to realize high-performance BCZT ceramics by microstructure optimization. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Apr2023, Vol. 49 Issue 8, p12293-12300. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Sintering%22">Sintering</searchLink><br /><searchLink fieldCode="DE" term="%22Lead-free+ceramics%22">Lead-free ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Ceramics%22">Ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Curie+temperature%22">Curie temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink>
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  Data: The two-step sintering of lead-free Ba 0 · 85 Ca 0 · 15 Zr 0 · 1 Ti 0·9 O 3 ·(BCZT) ceramics was investigated as a way to enhance its piezoelectric properties. The variations in grain size as a function of the calcination and sintering conditions and its effect on performance is discussed. Results indicate that as the calcination and first-step sintering temperatures increased, grain size became large and was independent of the second sintering step. Large grains were responsible for the enhanced piezoelectric properties by causing lattice distortion, larger domains, and easy motion of domain walls. The BCZT ceramic calcined at 1200 °C and sintered at 1540 °C without holding and then cooled to 1400 °C and held at 1400 °C for 4 h exhibited optimal performance with the highest remnant polarization P r ∼13.5 μC/cm2, the largest piezoelectric constant d 33 ∼ 529 pC/N at room temperature, and the highest Curie temperature T c ∼125 °C. Two-step sintering has been turned out to be an effective method to realize high-performance BCZT ceramics by microstructure optimization. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.ceramint.2022.12.083
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Lead-free ceramics
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      – SubjectFull: Ceramics
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      – SubjectFull: Curie temperature
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      – SubjectFull: Grain size
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      – SubjectFull: Microstructure
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      – TitleFull: Optimizing the piezoelectric properties of Ba0·85Ca0·15Zr0·10Ti0·90O3·lead-free ceramics via two-step sintering.
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            NameFull: Shi, Shengfang
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            NameFull: Hashimoto, Hideki
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              M: 04
              Text: Apr2023
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              Y: 2023
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