Detail publikace

The complex evaluation of functional properties of nearly dense BCZT ceramics and their dependence on the grain size

BIJALWAN, V. TOFEL, P. ERHART, J. MACA, K.

Originální název

The complex evaluation of functional properties of nearly dense BCZT ceramics and their dependence on the grain size

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Lead free piezoceramics BCZT Sintering Grain size Dielectric properties Mechanical quality factor

Autoři

BIJALWAN, V.; TOFEL, P.; ERHART, J.; MACA, K.

Vydáno

1. 1. 2019

ISSN

0272-8842

Periodikum

Ceramics International

Ročník

45

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

317

Strany do

326

Strany počet

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"
}