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Proceedings Paper

A new powder production route for transparent spinel windows: powder synthesis and window properties
Author(s): Ronald Cook; Michael Kochis; Ivar Reimanis; Hans-Joachim Kleebe
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Paper Abstract

Spinel powders for the production of transparent polycrystalline ceramic windows have been produced using a number of traditional ceramic and sol-gel methods. We have demonstrated that magnesium aluminate spinel powders produced from the reaction of organo-magnesium compounds with surface modified boehmite precursors can be used to produce high quality transparent spinel parts. The new powder production method allows fine control over the starting particle size, size distribution, purity and stoichiometry. The new process involves formation of a boehmite sol-gel from the hydrolysis of aluminum alkoxides followed by surface modification of the boehmite nanoparticles using carboxylic acids. The resulting surface modified boehmite nanoparticles can then be metal exchanged at room temperature with magnesium acetylacetonate to make a precursor powder that is readily transformed into pure phase spinel.

Paper Details

Date Published: 18 May 2005
PDF: 7 pages
Proc. SPIE 5786, Window and Dome Technologies and Materials IX, (18 May 2005); doi: 10.1117/12.602983
Show Author Affiliations
Ronald Cook, TDA Research, Inc. (United States)
Michael Kochis, TDA Research, Inc. (United States)
Ivar Reimanis, Colorado School of Mines (United States)
Hans-Joachim Kleebe, Colorado School of Mines (United States)

Published in SPIE Proceedings Vol. 5786:
Window and Dome Technologies and Materials IX
Randal W. Tustison, Editor(s)

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