Fracture behavior of Tyranno-ZMI fiber exposed in air at 1173 ∼ 1673 K

K. Morishita, M. Hojo, H. Okuda, S. Ochiai, M. Sato

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

The fracture behavior of the Tyranno-ZMI fiber exposed in air at 1173 ∼ 1673K for 2×104s was studied. The average strength of the fiber with SiO2 layer on its surface decreased and the scatter of strength increased with increasing exposure temperature. The fracture of the fiber was controlled by the propagation of the crack made by the premature fracture of the SiO2 layer into fiber. The average strength of the fiber without SiO2 layer prepared by etching away the SiO2 layer from the fiber exposed in air, decreased also with increasing exposure temperature, whereas it was far higher than that of the fiber with SiO 2 layer. The fracture toughness of the fiber, which was originally amorphous decreased with increasing exposure temperature due to the crystallization. In this way, the high temperature-exposure in air caused degradation of the fiber itself and the SiO2 layer-originated crack propagation.

本文言語英語
ホスト出版物のタイトル11th International Conference on Fracture 2005, ICF11
ページ788-793
ページ数6
出版ステータス出版済み - 12 1 2005
外部発表はい
イベント11th International Conference on Fracture 2005, ICF11 - Turin, イタリア
継続期間: 3 20 20053 25 2005

出版物シリーズ

名前11th International Conference on Fracture 2005, ICF11
1

その他

その他11th International Conference on Fracture 2005, ICF11
Countryイタリア
CityTurin
Period3/20/053/25/05

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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