Thermal expansion behavior of ZrO2-Y2O3-Ni cermets

Thermal expansion was measured in the temperature range from room temperature to 950 °C for various compositions of the ZrO2-Ni cermets containing 8 wt% Y2O3. The data can be described using the first and second coefficients of thermal expansion. The coefficient of linear thermal expansion in this s...

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Bibliographic Details
Published in:Materials letters 1997-08, Vol.32 (2-3), p.59-62
Main Authors: Hu, Wangyu, Guan, Hengrong, Sun, Xiaofeng, Li, Shizhuo
Format: Article
Language:English
Subjects:
Applied sciences
Cermet
Coefficient of thermal expansion
Exact sciences and technology
Metals. Metallurgy
Ni-coated ceramic powder
Powder metallurgy. Composite materials
Production techniques
Sintered metals and alloys. Pseudo alloys. Cermets
Thermal expansion
Zirconia
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Summary:Thermal expansion was measured in the temperature range from room temperature to 950 °C for various compositions of the ZrO2-Ni cermets containing 8 wt% Y2O3. The data can be described using the first and second coefficients of thermal expansion. The coefficient of linear thermal expansion in this specific temperature range increases linearly with increasing Ni content, and that of ZrO2 can be obtained from the extrapolated values. Finally, the dependence of the average coefficient of linear thermal expansion on composition of these cermets is discussed.
ISSN:0167-577X
1873-4979
DOI:10.1016/S0167-577X(97)00008-6