Stability under hydrothermal conditions and fracture strength of yttria- and ceria-doped tetragonal zirconia/alumina composites prepared by HIP

被引：0

作者：

Hirano, Masanori ^{[1
]}

Matsuyama, Tatsuo ^{[1
]}

Inada, Hiroshi ^{[1
]}

Suzuki, Kazutaka ^{[1
]}

Yoshida, Haruo ^{[1
]}

Machida, Michihide ^{[1
]}

机构：

[1] Noritake Co Ltd, Nagoya, Japan

来源：

Journal of the Ceramic Society of Japan. International ed. | 1991年 / 99卷 / 03期

关键词：

Bending Strength - Hot Isostatic Pressing - Hydrothermal Aging;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Yttria- and ceria-doped tetragonal zirconia (Y, Ce)-TZP)/Al2O3 composites were fabricated by HIPping at 1400°C to 1600°C and 147MPa for 0.5h in Ar, and their bending strength, microstructure and stability under hydrothermal conditions at 180°C and 1MPa were studied. The bending strength of (4Y, 4Ce)-TZP/25wt% Al2O3 composites HIPped at 1400°C was 1600MPa. The thermal stability of (Y, Ce)-TZP/Al2O3 composites increased with decreasing HIP temperature, since it depends on the HIP temperature. (4Y, 4Ce)-TZP/25wt%Al2O3 composites HIPped at 1400°C showed improved stability under hydrothermal conditions at 180°C and 1MPa. The composites treated at 1600°C showed marked grain growth as compared with 3Y-TZP/Al2O3 composites, and their bending strength was greatly reduced to less than that of normal sintered bodies. HIPping below 1500°C in Ar was useful to densify the composites and to improve the fracture strength.

引用

页码：8 / 12

共 34 条

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