STRENGTH AND PHASE-STABILITY OF YTTRIA-CERIA-DOPED TETRAGONAL ZIRCONIA ALUMINA COMPOSITES SINTERED AND HOT ISOSTATICALLY PRESSED IN ARGON OXYGEN GAS ATMOSPHERE

被引:8
作者
HIRANO, M
INADA, H
机构
[1] Noritake Co., Limited, Nagoya, Noritake
关键词
D O I
10.1111/j.1151-2916.1991.tb04067.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Yttria-ceria-doped tetragonal zirconia ((Y,Ce)-TZP)/alumina (Al2O3) composites were fabricated by hot isostatic pressing at 1400-degrees to 1450-degrees-C and 196 MPa in an Ar-O2 atmosphere using the fine powders prepared by hydrolysis of ZrOCl2 solution. The composites consisting of 25 wt% Al2O3 and tetragonal zirconia with compositions 4 mol% YO1.5-4 mol% CeO2-ZrO2 and 2.5 mol% YO1.5-5.5 mol% CeO2-ZrO2 exhibited mean fracture strength as high as 2000 MPa and were resistant to phase transformation under saturated water vapor pressure at 180-degrees-C (1 MPa). Postsintering hot isostatic pressing of (4Y,4Ce)-TZP/Al2O3 and (2.5Y,5.5Ce)-TZP/Al2O3 composites was useful to enhance the phase stability under hydrothermal conditions and strength.
引用
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页码:606 / 611
页数:6
相关论文
共 21 条
[1]  
CHEN YL, 1989, BRIT CERAM TRANS J, V88, P7
[2]   SINTERING, MICROSTRUCTURE, HARDNESS, AND FRACTURE-TOUGHNESS BEHAVIOR OF Y2O3-CEO2-ZRO2 [J].
DUH, JG ;
DAI, HT ;
CHIOU, BS .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1988, 71 (10) :813-819
[3]   PHASE ANALYSIS IN ZIRCONIA SYSTEMS [J].
GARVIE, RC .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1972, 55 (06) :303-&
[4]   EFFECT OF STRESS-INDUCED PHASE-TRANSFORMATION ON PROPERTIES OF POLYCRYSTALLINE ZIRCONIA CONTAINING METASTABLE TETRAGONAL PHASE [J].
GUPTA, TK ;
LANGE, FF ;
BECHTOLD, JH .
JOURNAL OF MATERIALS SCIENCE, 1978, 13 (07) :1464-1470
[5]  
HIRANO M, 1991, J CERAM SOC JPN, V99, P23
[6]  
HIRANO M, J CERAM SOC JPN
[7]   PHASE-CHANGE AND MECHANICAL-PROPERTIES OF ZRO2-Y2O3 SOLID ELECTROLYTE AFTER AGING [J].
KOBAYASHI, K ;
KUWAJIMA, H ;
MASAKI, T .
SOLID STATE IONICS, 1981, 3-4 (AUG) :489-493
[8]   DEGRADATION DURING AGING OF TRANSFORMATION-TOUGHENED ZRO2-Y2O3 MATERIALS AT 250-DEGREES-C [J].
LANGE, FF ;
DUNLOP, GL ;
DAVIS, BI .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1986, 69 (03) :237-240
[9]  
LANGE FF, 1982, J MATER SCI, V17, P225, DOI 10.1007/BF00809057
[10]  
MATSUI M, 1984, ADV CERAM, V12, P371