Recent advancement of Tyranno/SiC composites R&D

T. Nakayasu, M. Sato, T. Yamamura, K. Okamura, Y. Katoh, A. Kohyama

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations

Abstract

Ceramic matrix composites were investigated for structural and thermal applications in high efficiency and environmental conscious fusion energy systems. In order to up-grade their low activation characteristics, thermal conductivity and high temperature properties, the crystallized Si-Al-C fiber (Tyranno-SA) and pyrolyzed materials obtained from polymethylsilane (PMS) including polycarbosilane (PCS) were applied as reinforcing fiber and matrix, respectively. The new Tyranno-SA/SiC composites with near stoichiometry matrix presented excellent improvements in heat resistance and thermal conductivity from those with non-stoichiometry matrices. The remarkable improvements in tensile properties and fatigue characteristics, at 1300 °C, were attributed by the use of polymetalocarbosilane (PMC) polymer with inorganic powder fillers, BMAS, as the matrix precursor.

Original languageEnglish
Pages (from-to)301-308
Number of pages8
JournalCeramic Engineering and Science Proceedings
Volume20
Issue number4
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 23rd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - Cocoa Beach, FL, USA
Duration: Jan 25 1999Jan 29 1999

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