[P] P37,P80～P87

[P86] Microstructure changes of SiC fiber due to impurities induced internal oxidation

*Xinwei YUAN^1,2, Sosuke KONDO², Kazuya SHIMODA³, Hao YU², Yasuki OKUNO², Ryuta KASADA² (1. 東北大工(院生)、2. 東北大金研、3. 物材機構)

Keywords:Silicon carbide、Fibers、Oxidation、Mechanical properties、Micropillar compression

The strength of SiCf/SiC is strongly dependent on the fiber strength which is degraded after oxidation. This study aims to clarify what microstructural changes were induced by oxidation.