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Proceedings Paper

Transparent SiC for mid-IR windows and domes
Author(s): Jitendra Singh Goela; Raymond L. Taylor
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Paper Abstract

Transparent (beta) -SiC has been fabricated by the pyrolysis of methyltrichlorosilane in a hot wall chemical vapor deposition reactor. Characterization of material indicates that transparent SiC is a theoretically dense, highly pure (99.9996%), highly oriented (111), (beta) -phase (cubic) material possessing high optical transmission in the wavelength region 0.5 - 6 micrometers , a high value of hardness, electrical resistivity and thermal conductivity, and a low value of thermal expansion coefficient. These properties make it a good candidate material for use as domes and windows in severe environments such as high speed missiles, laser, combustion and space systems. Important properties of transparent SiC were also compared with those of the opaque SiC to determine if optical transmission can be correlated with other material properties. A good correlation was obtained between material transmission and microstructure, crystallographic structure and electrical resistivity.

Paper Details

Date Published: 28 September 1994
PDF: 14 pages
Proc. SPIE 2286, Window and Dome Technologies and Materials IV, (28 September 1994); doi: 10.1117/12.187382
Show Author Affiliations
Jitendra Singh Goela, Morton International/CVD Inc. (United States)
Raymond L. Taylor, Morton International/CVD Inc. (United States)

Published in SPIE Proceedings Vol. 2286:
Window and Dome Technologies and Materials IV
Paul Klocek, Editor(s)

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