Publication result detail

Polycrystalline alumina ceramics doped with nanoparticles for increased transparency

TRUNEC, M.; MACA, K.; CHMELÍK, R.

Original Title

Polycrystalline alumina ceramics doped with nanoparticles for increased transparency

English Title

Polycrystalline alumina ceramics doped with nanoparticles for increased transparency

Type

WoS Article

Original Abstract

Transparent alumina samples were prepared by the gelcasting process followed by pressureless presintering and hot isostatic pressing. Hightransparency was obtained by doping alumina powder with zirconia and spinel nanoparticles. The doping approach enabled accommodating 0.3wt% zirconia and 0.175 wt% spinel nanoparticles without any light scattering. The doping combined with colloidal processing resulted in grainsize refinement in a fully dense microstructure and adequate in-line transmission improvement. The maximum in-line transmission reached 70.4%at a wavelength of 632.8 nm and a sample thickness of 0.8 mm and was at the theoretical maximum in the infrared wavelength range between 2000 and 4000 nm. The presented processing approach featured near-net shape and scale-up capabilities.

English abstract

Transparent alumina samples were prepared by the gelcasting process followed by pressureless presintering and hot isostatic pressing. Hightransparency was obtained by doping alumina powder with zirconia and spinel nanoparticles. The doping approach enabled accommodating 0.3wt% zirconia and 0.175 wt% spinel nanoparticles without any light scattering. The doping combined with colloidal processing resulted in grainsize refinement in a fully dense microstructure and adequate in-line transmission improvement. The maximum in-line transmission reached 70.4%at a wavelength of 632.8 nm and a sample thickness of 0.8 mm and was at the theoretical maximum in the infrared wavelength range between 2000 and 4000 nm. The presented processing approach featured near-net shape and scale-up capabilities.

Keywords

Alumina; Doping; Grain growth; Hot isostatic pressing; In-line transmission

Key words in English

Alumina; Doping; Grain growth; Hot isostatic pressing; In-line transmission

Authors

TRUNEC, M.; MACA, K.; CHMELÍK, R.

RIV year

2016

Released

01.03.2015

Publisher

Elsevier Science Ltd.

Location

THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Volume

35

Number

3

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1001

Pages to

1009

Pages count

9

BibTex

@article{BUT113368,
  author="Martin {Trunec} and Karel {Maca} and Radim {Chmelík}",
  title="Polycrystalline alumina ceramics doped with nanoparticles for increased transparency",
  journal="Journal of the European Ceramic Society",
  year="2015",
  volume="35",
  number="3",
  pages="1001--1009",
  doi="10.1016/j.jeurceramsoc.2014.09.041",
  issn="0955-2219"
}