期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 35, 期 3, 页码 1001-1009出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2014.09.041
关键词
Alumina; Doping; Grain growth; Hot isostatic pressing; In-line transmission
资金
- Czech Science Foundation [13-09310S]
- European Regional Development Fund [CZ. 1.05/1.1.00/02.0068]
Transparent alumina samples were prepared by the gelcasting process followed by pressureless presintering and hot isostatic pressing. High transparency was obtained by doping alumina powder with zirconia and spinel nanoparticles. The doping approach enabled accommodating 0.3 wt% zirconia and 0.175 wt% spinel nanoparticles without any light scattering. The doping combined with colloidal processing resulted in grain size 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 am. The presented processing approach featured near-net shape and scale-up capabilities. (C) 2014 Elsevier Ltd. All rights reserved.
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