Thermal and mechanical properties of perovskite-type barium hafnate
Thermal and mechanical properties of perovskite-type barium hafnate
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DOI：
10.1016/j.jallcom.2005.06.030
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发表时间：
2006-01
影响因子：
6.2
通讯作者：
T. Maekawa;K. Kurosaki;S. Yamanaka
中科院分区：
文献类型：
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作者：
T. Maekawa;K. Kurosaki;S. Yamanaka
Polycrystalline samples of the barium perovskite-type oxide, BaHfO3were prepared by solid-state reactions from HfO2and BaCO3powders. The thermal expansion coefficient, heat capacity, thermal diffusivity, thermal conductivity, elastic modulus, Debye temperature, and micro-Vickers hardness were measured. The crystal structure of BaHfO3is of the cubic perovskite type with the lattice parameter 0.4171nm at room temperature. The sample bulk density is 91% of the theoretical density. The average linear thermal expansion coefficient is 6.93×10−6K−1in the temperature range between 300 and 1500K. The Young's modulus equals 194GPa. The thermal conductivity at room temperature is 10.4Wm−1K−1.
