Author(s)

N. Hisamori & Y. Kimura

Abstract

Correlation between microstructure changes by water molecule corrosion and strength characteristics of ZrO% particle dispersed N. Hisamori* , Y. Kimura^ "Graduate School, Kogakuin University, 1-24-2 Nishishinjuku, Shinjuku-ku, Tokyo 160, Japan Email: bd96002@hmail m. kogakuin. ac.jp * Department of Environmental Chancel Engineering, Kogakuin University, 1-24-2 Nishishinjuku, Shinjuki4-ku, Tokyo 160, Japan Email: kimura@cc. kogakuin. ac.jp Abstract The influence of zirconia particle addition upon improvement in mechanical properties of alumina and its degradation by deionized water corrosion was investigated, Submicrometer polycnstalline a -ALO] powder and the mixed powders of Al2O3-3mol% Y^Os were used as starting material. Sintered ALO] bodies with 5. 15 and 30wt.% 3 mol% YzOg doped tetragonal ZrO: were made pressureless sintering method at 1550. 600 and 1650 °C. respectively. These ceramic composites were corroded in room temperature deionized water at 30 T. The effects of microstr

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