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Proceedings Paper

Characterization of ALON optical ceramic
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Paper Abstract

ALONTM Optical Ceramic is a durable window material for UV, Visible and Mid IR window and dome applications. The mechanical, thermal, and optical properties of ALON products produced commercially by Surmet Corporation have been measured and this new data will be presented. Comparisons to previously measured data will be made. Optical quality, low scatter ALON having high strength that is nearly double previously reported has been made. Average strength values of 700 MPa at 21°C and 631 MPa at 500°C have been measured for ALON specimens prepared by precision surface finishing techniques. Polished optical domes tested have survived severe thermal shock tests. These strength levels are comparable to those for single crystal sapphire. Strength, thermal conductivity, thermal expansion, refractive index, emissivity and absorption coefficient will be presented. The possible mechanisms for the increased strength will be discussed.

Paper Details

Date Published: 18 May 2005
PDF: 17 pages
Proc. SPIE 5786, Window and Dome Technologies and Materials IX, (18 May 2005); doi: 10.1117/12.607596
Show Author Affiliations
Charles T. Warner, Surmet Precision Optics (United States)
Thomas M. Hartnett, Surmet Corp. (United States)
Donald Fisher, OpticsSolutions Co. (United States)
Wayne Sunne, Raytheon Missile Systems (United States)

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

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