Publication detail

Basic microstructural, mechanical, electrical and optical characterisation of BaTiAl6O12 ceramics

DRDLÍK, D. MAŘÁK, V. KLEMENT, R. TOFEL, P. DRDLÍKOVÁ, K. HADRABA, H. CHLUP, Z.

Original Title

Basic microstructural, mechanical, electrical and optical characterisation of BaTiAl6O12 ceramics

Type

journal article in Web of Science

Language

English

Original Abstract

In progressive particle or layered composites based on a combination of BaTiO3 and Al2O3, serving as e.g. ceramic harvesters, new phases are formed during heat treatment. The dominant one is BaTiAl6O12. This study provides information about the microstructural, mechanical and optical properties of the BaTiAl6O12 ceramics. The evolution of the phases during the solid-state reaction synthesis of the BaTiAl6O12 was monitored. The fully dense samples prepared by Spark Plasma Sintering had indentation Vickers hardness and indentation elastic modulus within ranges of 10.1 – 13.7 GPa and 132.0 – 187.0 GPa, depending on loading force. The three-point bending tests of the BaTiAl6O12 samples resulted in flexural strength of 129.9 MPa and fracture toughness of 1.8 MPa.m1/2.The sample showed blue broad-band emission under UV excitation due to the charge-transfer transition of the Ti4+ and defect sites. The BaTiAl6O12 evinced low permittivity (ε') = 16 and dielectric loss (tan δ) < 0.0003 at a frequency 1 kHz.

Keywords

BaTiAl6O12; Spark Plasma Sintering; microstructure; mechanical properties; luminescence

Authors

DRDLÍK, D.; MAŘÁK, V.; KLEMENT, R.; TOFEL, P.; DRDLÍKOVÁ, K.; HADRABA, H.; CHLUP, Z.

Released

27. 6. 2024

Publisher

Elsevier

ISBN

2173-0431

Periodical

BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO

Year of study

63

Number

5

State

Kingdom of the Netherlands

Pages from

368

Pages to

376

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0366317524000189

Full text in the Digital Library

http://hdl.handle.net/11012/249742

BibTex

@article{BUT189575,
  author="Daniel {Drdlík} and Vojtěch {Mařák} and Róbert {Klement} and Pavel {Tofel} and Katarina {Drdlíková} and Hynek {Hadraba} and Zdeněk {Chlup}",
  title="Basic microstructural, mechanical, electrical and optical characterisation of BaTiAl6O12 ceramics",
  journal="BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO",
  year="2024",
  volume="63",
  number="5",
  pages="9",
  doi="10.1016/j.bsecv.2024.06.002",
  issn="2173-0431",
  url="https://www.sciencedirect.com/science/article/pii/S0366317524000189"
}