Gas Sensitivity of Ferric Oxide Ceramics with Transition-Metal Oxide

Abstract

Abstract: The ferric oaide system with transition metal oxides such as CuO-Fe₂O₃ and ZnO-Fe₂O₃, were Sintered at different temperatures and formed a porous ceramic with a-Fe₂O₃ and spinel crystal phases. This ceramic possesses a remarked sensitivity to reductive gases. The special property is considered to relate to the ferric vacancy coccentration in a spinel phase. The ferric vacancy concentration varies with composition and heating temperature. The gas sensitivity can be improved by the increment of the ferric vacancy concentration.

Key words: gas sensitivity, ferric vacancy, solid solution

HE Yunqiu,XIE Qinghong. Gas Sensitivity of Ferric Oxide Ceramics with Transition-Metal Oxide[J]. Journal of Inorganic Materials.

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Gas Sensitivity of Ferric Oxide Ceramics with Transition-Metal Oxide

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