@article{oai:jaxa.repo.nii.ac.jp:00022607,
 author = {青木, 卓哉 and 小笠原, 俊夫 and 大久保, 陽介 and 吉田, 克己 and 矢野, 豊彦 and Aoki, Takuya and Ogasawara, Toshio and Okubo, Yosuke and Yoshida, Katsumi and Yano, Toyohiko},
 journal = {Composites. Part A, Applied science and manufacturing},
 month = {Nov},
 note = {The fabrication of Tyranno ZMI fiber/SiC-based matrix composites by a melt infiltration (MI) process using Si-8.5 at%Hf alloy was investigated. The Si-Hf alloy was utilized instead of pure Si for MI processing in order to lower the MI temperature to below 1400 C as well as to inhibit the thermal degradation of amorphous SiC fibers. Microstructural characterization revealed that the composite fabricated by Si-8.5 at%Hf alloy MI at 1375 C had a highly dense matrix comprising reaction-formed SiC and unreacted Si-HfSi2 phases. The Si-Hf alloy melt-infiltrated composite exhibited approximately 35% higher bending strength than a conventional Si melt-infiltrated composite fabricated at 1450 C. Further, it was confirmed that Si-Hf alloy melt-infiltrated composite maintained its strength up to 1200 C in an Ar atmosphere. These results clearly demonstrated that the Si-8.5 at%Hf alloy offers sufficient infiltration ability and reactivity to form a dense SiC-based matrix at 1375 C., 資料番号: PA1520020000},
 pages = {155--162},
 title = {Fabrication and properties of Si-Hf alloy melt-infiltrated Tyranno ZMI fiber/SiC-based matrix composites},
 volume = {66},
 year = {2014}
}