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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" }