K-0923 C/C複合材料の高温接合強度評価(J05-3 高温特性)(J05 複合材料の加工と評価)

概要

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Increased use of Carbon/Carbon (C/C) composites necessitates fabrication of complex structures, which require high temperature secondary bonding. Secondary bonding of C/C interfaces provides design flexibility and also alleviates complicated fabrication problems. In this study, resin-carbonizaition process was applied for the bonding of C/C composites. In this process, C/C composites were bonded with phenolic resin and the cured resin was then heat-treated to carbonize. Bonding strength of thus bonded layers was evaluated by a double-ends-notched method at elevated temperatures up to 2000℃ in vacuum. The results revealed that bonding-strength increase with increasing temperature. Since strength of graphite is known to be affected by absorbed gas, out gas test was also performed. Absorbed gas is shown to lower bonding strength. Therefore it is concluded that this effect was shown to be one of major factors for the strength enhancement at elevated temperatures.
社団法人日本機械学会の論文
2001-08-22