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Proceedings Paper

Nitrogen-Stabilized Aluminum Oxide Spinel (ALON)
Author(s): Normand D. Corbin; James W. McCauley
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Paper Abstract

A new ceramic, nitrogen-stabilized aluminum oxide spinel (ALON), has been developed at AMMRC which may have distinct advantages over sintered polycrystalline a-A1203. This material is isotropic and has been fabricated into dense, transparent bodies with the following properties: Knoop (100) hardness of 1800, elastic modulus of 46x106 psi, a room temperature fracture strength of 45x103 psi, a dielectric constant and loss tan%ent, respectively, at 10 MHz of 8.56 and 0.0004, trivial oxidation in air up to 1200 C and IR cutoff at 5.2 μm, and an average thermal expansion coefficient (a) of 7.00x10-6C -1 (25°C-1000°C).

Paper Details

Date Published: 26 February 1982
PDF: 5 pages
Proc. SPIE 0297, Emerging Optical Materials, (26 February 1982); doi: 10.1117/12.932479
Show Author Affiliations
Normand D. Corbin, Army Materials and Mechanics Research Center (United States)
James W. McCauley, Army Materials and Mechanics Research Center (United States)


Published in SPIE Proceedings Vol. 0297:
Emerging Optical Materials
Solomon Musikant, Editor(s)

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