Abstract—
BiFe2(PO4)3 ceramic powder with controlled chemical and phase compositions has been prepared by evaporation of the salt solution, followed by heat treatment. The powder was consolidated by hot pressing and spark plasma sintering, which allowed high-density (92–98%) BiFe2(PO4)3 ceramics with the α-CaMg2(SO4)3 structure to be obtained. Their thermal diffusivity was investigated by the laser flash method in the range 298–573 K, and the thermal conductivity of the high-density (98%) ceramic was determined. Its thermal conductivity was shown to decrease with increasing temperature. The thermal diffusivity and thermal conductivity (0.9–1.4 W/(m K)) of the BiFe2(PO4)3 ceramics demonstrate that they are heat insulators with high working temperatures.
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This work was supported by the Russian Science Foundation, grant no. 23-23-00044. https://rscf.ru/project/23-23-00044/.
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Pet’kov, V.I., Lavrenov, D.A., Kovalskii, A.M. et al. BiFe2(PO4)3 Ceramics: Fabrication by Hot Pressing and Spark Plasma Sintering, Thermal Conductivity, and Thermal Diffusivity. Inorg Mater 59, 798–803 (2023). https://doi.org/10.1134/S0020168523070130
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DOI: https://doi.org/10.1134/S0020168523070130