[9a-S223-1~9] 7.2 Applications and technologies of electron beams

[9a-S223-1] In-situ observation of the formation of silicide by Fe₂O₃ and Si

〇Nobuhiro Ishikawa¹, Tadashi Mitsui¹, Masaki Takeguchi¹, Kazutaka Mitsuishi¹ (1.NIMS)

Keywords:silicide, hematite, transformation

Recently we investigated the reduction process of the Fe₂O₃ (α-hematite) by silicon oxides with use of in-situ observation in TEM. Si also reduced hematite and we found precipitated-Fe transformed to silicide by electron irradiation. The transformation completed was extremely short term within one frame of VTR. The detailed structure of the transformed precipitate was identified by diffraction spots. The transformed precipitate became stable even in longer electron irradiation. These results indicated that the possibility of silicide formation directly from iron ore.