遷移金属酸化物添加ジルコニア融液超急冷体の合成と性質

概要

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The mixtures of ZrO_2 and some transition metal (Mn, Fe, Co) oxides were melted by Xe-arc image furnace and dropped into a twin roller to be quenched. The rapidly solidified matebrials consisted of stabilized zirconia phases with tetragonal or cubic crystal structure could be obtained. The homogeneity range of the stabilized zirconia were considerably different depending on the doped oxides and quenching atmosphere. The lattice parameters of the cubic phases were decreased with increasing of the concentration of the transition metals, which showed that the stabilization was attributed to the substitution of Zr with the transition metal ions. The effect of the ionic radii and the charge of substitute ions on the stabilizing behavior was discussed. The stabilized zirconia phases decomposed into monoclinic ZrO_2 and transition metal oxides above 600℃
湘南工科大学の論文
1995-03-25