Thesis or Dissertation 強磁場コロイドプロセスによるヘマタイト配向体の創製と異方特性評価

山崎, 歩

pp.1 - 68 , 2015-03-24
We utilized the crystallographic relationship between hematite (α-Fe 2 O 3 ) and paramagnetic goethite (α-FeOOH) to fabricate oriented hematite sintered compact. Goethite powders were synthesized by alkaline precipitation of ferric nitrate solution using sodium hydroxide followed by aging. Goethite green compacts prepared by the magnetic field-assisted colloidal processing technique were sintered. The c-axis of hematite was aligned parallel to the applied magnetic field. Relative density of the hematite ceramics was improved through the orientation. Key Words: hematite, goethite, anisotropic particle, topotaxy, magnetic field-assisted colloidal process.

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