Publication detail

Processing of large and complex-shaped fine-grained alumina bodies with high transparency

TRUNEC, M. KAŠTYL, J. ŠŤASTNÝ, P. HILDEBRANDT, S.

Original Title

Processing of large and complex-shaped fine-grained alumina bodies with high transparency

Type

journal article in Web of Science

Language

English

Original Abstract

The paper presents the development of unique processing methods for large alumina windows, domes, and thin sheets with a fine-grained structure and high optical transmission. Gelcasting combined with post-hot isostatic pressing proved to be a suitable processing method for windows and domes. This method provided alumina ceramics with a real in-line transmission of up to 72 % at a wavelength of 633 nm and with a theoretical in-line transmission in the infrared region between 1500 and 4000 nm for 0.8 mm thick bodies. Complex-shaped bodies, domes, were prepared with minimum warping during sintering. Thin transparent alumina sheets were prepared by gel-tape casting. This novel tape casting method utilized the advantages of the gelcasting method. The real in line transmission of the tapes was lower compared with the windows. Nevertheless, the thin tapes with a thickness below 350 mu m exhibited reasonable transparency even after pressureless sintering and without a polishing of sintered samples.

Keywords

Alumina; Gelcasting; Gel-tape casting; Grain size; Optical transmission

Authors

TRUNEC, M.; KAŠTYL, J.; ŠŤASTNÝ, P.; HILDEBRANDT, S.

Released

1. 3. 2021

Publisher

ELSEVIER SCI LTD

Location

OXFORD

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

41

Number

3

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2016

Pages to

2022

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0955221920308785?via%3Dihub

BibTex

@article{BUT173119,
  author="Martin {Trunec} and Jaroslav {Kaštyl} and Přemysl {Šťastný} and Stefanie {Hildebrandt}",
  title="Processing of large and complex-shaped fine-grained alumina bodies with high transparency",
  journal="Journal of the European Ceramic Society",
  year="2021",
  volume="41",
  number="3",
  pages="2016--2022",
  doi="10.1016/j.jeurceramsoc.2020.10.065",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221920308785?via%3Dihub"
}