アルミナ/YAGファイバー複合セラミックスの機械的特性

概要

論文の詳細を見る
Al_2O_3/YAG fiber composite was prepared and its high temperature mechanical properties investigated. The mechanical properties did not show any remarkable degradation up to temperatures ≤ 1673 K in comparison with room-temperature values. The strength and fracture toughness at high temperature could be remarkably improved above those of monolithic alumina by adding YAG fibers. As factor leading to such an improvement, it was observed that the fracture mode of the YAG fibers becomes intergranular with rising temperature. The degradation of Young's modulus caused upon temperature rise in alumina ceramics was compensated by the increase of fracture energy due to the change of fracture mode for the YAG fibers.
社団法人日本セラミックス協会の論文
2001-07-01