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11 January 2005 New-technology silicon carbide (NT-SiC): demonstration of new material for large lightweight optical mirror
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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.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Katsuhiko Tsuno D.V.M., 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, and Yoshio Tange "New-technology silicon carbide (NT-SiC): demonstration of new material for large lightweight optical mirror", Proc. SPIE 5659, Enabling Sensor and Platform Technologies for Spaceborne Remote Sensing, (11 January 2005);


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