STABILITY OF ZrO2 PHASES IN ULTRAFINE ZrO2-Al2O3 MIXTURES.

被引：0
|
作者：
Murase, Yoshio [1 ]
Kato, Etsuro [1 ]
Daimon, Keiji [1 ]
机构：
[1] Government Industrial Research Inst, Nagoya, Jpn, Government Industrial Research Inst, Nagoya, Jpn
来源：
| 1600年 / 69期
关键词：
STABILITY OF PHASES - ULTRAFINE PARTICLES;
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摘要：
Mixtures of ultrafine monoclinic zirconia and aluminum hydroxide were prepared by adding NH//4OH to hydrolyzed zirconia sols containing varied amounts of aluminum sulfate. The mixtures were heat-treated at 500 degree to 1300 degree C. The relative stability of monoclinic and tetragonal ZrO//2 in these ultrafine particles was studied by X-ray diffractometry. Growth of ZrO//2 crystallites at elevated temperatures was strongly inhibited by Al//2O//3 derived from aluminum hydroxide.
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