Research on Effects of Dy(Ac)_3 doping on Dielectric Properties of BaTiO_3 Ceramics AITranslate

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Chinese Library Classification Number:TQ174.758[化学工程—陶瓷工业]

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Barium titanate powder was prepared by hydrothermal method, doped with Dy（Ac）3, and then the ceramic was obtained. The effects of soluble Dy（Ac）3 doping on the dielectric properties of BaTiO3 powder were studied, and the law of the influence on the BT series capacitor ceramics has been obtained, i. e. with the increasing of Dy（Ac）3 additive, the dielectric constant （εr） of materials starts increasing and then decreasing while the dielectric losses （tanS） decreasing and the dielectric constant （εr） is maximum while ωDy（Ac）3 =0. 8%. The BT ceramics with optimum comprehensive properties have been obtained with high εr （= 5 672） ,low tanS（ =0. 0024） and high DC breakdown voltage（=6 kV/mm）. The influence mechanism of Dy（Ac）3 on the dielectric properties of BaTiO3ceramics is studied,thus providing the basis for prepara- tion of capacitor ceramics.