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BIJALWAN, V. TOFEL, P. ERHART, J. MACA, K.
Original Title
The complex evaluation of functional properties of nearly dense BCZT ceramics and their dependence on the grain size
Type
journal article in Web of Science
Language
English
Original Abstract
In this article, the effect of dwell time (2–48 h) during isothermal sintering at 1520 °C on the grain size, density and crystal structure of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 is demonstrated. All ceramics exhibited the phase transition from orthorhombic to mixed orthorhombic and tetragonal phases between 12 and 24 h dwell time. The piezoelectric, dielectric and ferroelectric properties of these ceramics show a strong correlation with grain size in the range of 16.5–44.5 μm. Nearly dense microstructure (93.1–94.3% t.d.) was maintained during entire dwell time range without sacrificing much of its functional properties. Increasing grain size caused a little decrease in d33* piezoelectric constant from 480 pC/N to 460 pC/N while mechanical quality factor (Qm) increased from 62 to 136. Diffusivity coefficient (γ) ranges between 1.46 and 1.55 which indicates a normal ferroelectric behavior.
Keywords
Lead free piezoceramics BCZT Sintering Grain size Dielectric properties Mechanical quality factor
Authors
BIJALWAN, V.; TOFEL, P.; ERHART, J.; MACA, K.
Released
1. 1. 2019
ISBN
0272-8842
Periodical
Ceramics International
Year of study
45
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
317
Pages to
326
Pages count
10
URL
https://www.sciencedirect.com/science/article/pii/S0272884218326312
BibTex
@article{BUT155463, author="Vijay {Bijalwan} and Pavel {Tofel} and Jiří {Erhart} and Karel {Maca}", title="The complex evaluation of functional properties of nearly dense BCZT ceramics and their dependence on the grain size", journal="Ceramics International", year="2019", volume="45", number="1", pages="317--326", doi="10.1016/j.ceramint.2018.09.169", issn="0272-8842", url="https://www.sciencedirect.com/science/article/pii/S0272884218326312" }