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Proceedings Paper

New-technology silicon carbide (NT-SiC): demonstration of new material for large lightweight optical mirror
Author(s): Katsuhiko Tsuno; Hiroshi Irikado; Kazuhiko Oono; Juro Ishida; Shoko Suyama; Yoshiyasu Itoh; Noboru Ebizuka; Hiroaki Eto; Yutang Dai; Wimin Lin; Toru Suzuki; Hitoshi Omori; Yukari Yamashita Yui; Toshiyoshi Kimura; Yoshio Tange
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Paper Abstract

Newly developed high-strength reaction-sintered silicon carbide, called New-Technology Silicon Carbide (NT-SiC) is an attractive material for lightweight optical mirror with two times higher bending strength than other SiC materials. The material has advantages in its fabrication process. The sintering temperature is significantly lower than that of pure silicon carbide ceramics and its sintering shrinkage is smaller than one percent. These advantages will provide rapid progress to fabricate large structures. The characteristics of the material are also investigated. The polish of the test piece demonstrated that the polished surface has no pore and is suited to visible region as well as infrared without CVD SiC coating. It is concluded that NT-SiC has potential to provide large lightweight optical mirror.

Paper Details

Date Published: 11 January 2005
PDF: 8 pages
Proc. SPIE 5659, Enabling Sensor and Platform Technologies for Spaceborne Remote Sensing, (11 January 2005); doi: 10.1117/12.580660
Show Author Affiliations
Katsuhiko Tsuno, NEC Toshiba Space Systems, Ltd. (Japan)
Hiroshi Irikado, NEC Toshiba Space Systems, Ltd. (Japan)
Kazuhiko Oono, NEC Toshiba Space Systems, Ltd. (Japan)
Juro Ishida, NEC Toshiba Space Systems, Ltd. (Japan)
Shoko Suyama, Toshiba Corp. (Japan)
Yoshiyasu Itoh, Toshiba Corp. (Japan)
Noboru Ebizuka, RIKEN-The Institute of Physical and Chemical Research (Japan)
Hiroaki Eto, RIKEN-The Institute of Physical and Chemical Research (Japan)
Yutang Dai, RIKEN-The Institute of Physical and Chemical Research (Japan)
Wimin Lin, RIKEN-The Institute of Physical and Chemical Research (Japan)
Toru Suzuki, RIKEN-The Institute of Physical and Chemical Research (Japan)
Hitoshi Omori, RIKEN-The Institute of Physical and Chemical Research (Japan)
Yukari Yamashita Yui, Japan Aerospace Exploration Agency (Japan)
Toshiyoshi Kimura, Japan Aerospace Exploration Agency (Japan)
Yoshio Tange, Japan Aerospace Exploration Agency (Japan)


Published in SPIE Proceedings Vol. 5659:
Enabling Sensor and Platform Technologies for Spaceborne Remote Sensing
George J. Komar; Jinxue Wang; Toshiyoshi Kimura, Editor(s)

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