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Proceedings Paper • Open Access

NTSIC(New Technology SiC): the progress of recent two years
Author(s): Katsuhiko Tsuno; Hiroshi Irikado; Kazuhiko Ono; Shoko Suyama; Yoshiyasu Itoh

Paper Abstract

New Technology Silicon Carbide (NTSIC®) is a reaction sintered silicon carbide with very high bending strength. Two times higher bending strength than other SiC materials is important characteristics in an optical mirror for space application. The space optics is to endure the launch environment such as mechanical vibration and shock as well as lightweight and good thermal stability of their figure. NTSIC has no open pore. It provides good surface roughness for infrared and visible application, when its surface is polished without additional coatings. Additional advantages are in the fabrication process. The sintering temperature is significantly lower than that of a sintered silicon carbide ceramics and its sintering shrinkage is less than one percent. These advantages will provide rapid progress to fabricate large structures and will enable that one meter mirror will put practical use. The fabrication capability has developed from 250mm to about one meter in these two years, after previous report of NTSIC. It is concluded that NTSIC has potential to provide large lightweight optical mirror.

Paper Details

Date Published: 21 November 2017
PDF: 7 pages
Proc. SPIE 10567, International Conference on Space Optics — ICSO 2006, 1056716 (21 November 2017); doi: 10.1117/12.2308049
Show Author Affiliations
Katsuhiko Tsuno, NEC TOSHIBA Space Systems, Ltd. (Japan)
Hiroshi Irikado, NEC TOSHIBA Space Systems, Ltd. (Japan)
Kazuhiko Ono, NEC TOSHIBA Space Systems, Ltd. (Japan)
Shoko Suyama, Toshiba Corp. (Japan)
Yoshiyasu Itoh, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 10567:
International Conference on Space Optics — ICSO 2006
Errico Armandillo; Josiane Costeraste; Nikos Karafolas, Editor(s)

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