Stock material or miscellaneous articles – Hollow or container type article – Glass – ceramic – or sintered – fused – fired – or calcined metal...
Patent
1993-04-16
1995-12-19
Nakarani, D. S.
Stock material or miscellaneous articles
Hollow or container type article
Glass, ceramic, or sintered, fused, fired, or calcined metal...
206305, 2065243, 428 346, 428328, 428329, 428331, 428702, B32B 516
Patent
active
054766966
ABSTRACT:
The present invention resides in a white thermal control surface resistant to darkening due to exposure to X-rays and ultraviolet radiation. The surface comprises a substrate and a ceramic zirconium orthosilicate coating on said substrate. The zirconium orthosilicate coating is obtained by plasma-spray applying particles of zirconium orthosilicate onto the substrate. The particles of zirconium orthosilicate are doped with an oxide of a +3 valent metal. The metal ions of said +3 valent metal oxide are dispersed substantially uniformly throughout said particles.
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"Preparation of Praeseodymium-Doped ZnSiO.sub.4 by a Sol-Gel Route"-Journal of Materials Science Letters-1991-pp. 1171-1172-Oheim et al.
Publication "Principles and Techniques of Radiation Hardening", by Normal J. Rudie, vol. 3, Third Edition, pp. 31-36, Western Periodicals Company, 1986.
Gordon Michael J.
Papazian Harold A.
Pierson Edward A.
Shepard Donald F.
Le H. Thi
Martin Marietta Corporation
Nakarani D. S.
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