Mechanical and thermal performance of C/SiC composites for SPICA mirror

Tsuyoshi Ozaki; Masami Kume; Takeharu Oshima; Takao Nakagawa; Toshio Matsumoto; Hidehiro Kaneda; Hiroshi Murakami; Koichi Kataza; Keigo Enya; Yukari Yui; Takashi Onaka; Matthias R. Krodel

doi:10.1117/12.552484

24 September 2004 Mechanical and thermal performance of C/SiC composites for SPICA mirror

Tsuyoshi Ozaki, Masami Kume, Takeharu Oshima, Takao Nakagawa, Toshio Matsumoto, Hidehiro Kaneda, Hiroshi Murakami, Koichi Kataza, Keigo Enya, Yukari Yui, Takashi Onaka, Matthias R. Krodel

Author Affiliations +

Proceedings Volume 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes; (2004) https://doi.org/10.1117/12.552484
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

One of the key technologies for next generation space telescope with a large-scale reflector is a material having high specific strength, high specific stiffness, low coefficient of thermal expansion and high coefficient of thermal conductivity. Several candidates such as fused silica, beryllium, silicon carbide and carbon fiber reinforced composites have been evaluated. Pitch-based carbon fiber reinforced SiC composites were developed for the SPICA space telescope mirror to comply with such requirements. Mechanical performance such as bending stiffness, bending strength and fracture toughness was significantly improved. Evaluation procedures of thermal expansion and thermal conductivity behavior at cryogenic temperatures (as low as 4.5K) were established and excellent performance for the SPICA mirror was demonstrated.

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Tsuyoshi Ozaki, Masami Kume, Takeharu Oshima, Takao Nakagawa, Toshio Matsumoto, Hidehiro Kaneda, Hiroshi Murakami, Koichi Kataza, Keigo Enya, Yukari Yui, Takashi Onaka, and Matthias R. Krodel "Mechanical and thermal performance of C/SiC composites for SPICA mirror", Proc. SPIE 5494, Optical Fabrication, Metrology, and Material Advancements for Telescopes, (24 September 2004); https://doi.org/10.1117/12.552484

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