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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU142073" target="_blank" >RIV/00216305:26620/21:PU142073 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0955221920308785?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0955221920308785?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2020.10.065" target="_blank" >10.1016/j.jeurceramsoc.2020.10.065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20504 - Ceramics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

1873-619X

Svazek periodika

41

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

2016-2022

Kód UT WoS článku

000596433900006

EID výsledku v databázi Scopus

2-s2.0-85095729369