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Stability of tetragonal phase in ZrO2powder

โœ Scribed by Takao Itoh


Publisher
Springer
Year
1986
Tongue
English
Weight
152 KB
Volume
5
Category
Article
ISSN
0261-8028

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Preparation of tetragonal ZrO2-Gd2O3powd
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ZrO2-Gd203 alloys containing 2, 3, 5 and 8 mol. % Gd203 have been prepared by mixed oxide (MO), hybrid sol-gel (SG), and co-precipitation (CP) routes. No tetragonal (t) phase is retained in the MO method, while 100% t phase is obtained in the calcined CP samples; the SG method leads to only partial

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Ceria-stabilized tetragonal zirconia polycrystals show high toughness and high resistance to the low-temperature ageing degradation. However, ceria is less effective in stabilizing tetragonal zirconia compared to yttria and other trivalent oxides. The tetravalent oxide of Ce02 can be easily reduced