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Proceedings Paper

Lanthana-Strengthened Yttria Domes And Windows
Author(s): G. C Wei; M R Pascucci; E A Trickett; C Brecher; W H Rhodes
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Paper Abstract

Lanthana-strengthened yttria is of interest for infrared applications because of its high strength, long wavelength cutoff (8 gm), and low emissivity. Specimens were fabricated for various optical, thermal, and mechanical tests, and their properties measured. A new thermal shock test method was developed and the thermal shock behavior characterized. The toughened yttria was shown to be more resistant to thermal shock fracture than the standard material. Techniques were developed for fabrication of full size infrared domes, and specimens successfully fabricated and characterized. Various details of the material and component properties will be discussed.

Paper Details

Date Published: 17 January 1989
PDF: 9 pages
Proc. SPIE 0968, Ceramics and Inorganic Crystals for Optics, Electro-Optics, and Nonlinear Conversion, (17 January 1989); doi: 10.1117/12.948119
Show Author Affiliations
G. C Wei, GTE Laboratories Incorporated (United States)
M R Pascucci, GTE Laboratories Incorporated (United States)
E A Trickett, GTE Laboratories Incorporated (United States)
C Brecher, GTE Laboratories Incorporated (United States)
W H Rhodes, GTE Laboratories Incorporated (United States)

Published in SPIE Proceedings Vol. 0968:
Ceramics and Inorganic Crystals for Optics, Electro-Optics, and Nonlinear Conversion
Robert W. Schwartz, Editor(s)

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