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- W2352208272 abstract "The penetrating of rare earth to BaTiO3 ceramics in gas phase was reported for the first time. The penetrating conditions and effects on electric characteristics of BaTiO3 ceramics were studied. The results showed that the penetrating of rare earth made the electric characteristics changed obviously. The resistivity of BaTiO3 ceramics penetrated with rare earth decreased obviously, when the rare earth content was 2%(wt),the penetrating temperature was 860℃and the penetrating time was 4h, the resistivity decreased to the smallest, which changed from 4.3×109Ω·m to 4.84Ω·m, and the conductance increased with the increasing of frequency and temperature, the electrical conductivity was better. Theconstant (e) of BaTiO3 ceramics penetrated with rare earth increased visibly,especially at lower frequency, the constant exhibited PTC effect, and the Curie temperature (Tc) had gone up to 124.9℃. It was showed through XRD analysis that the penetrated rare earth was entered into the grain boundary. Through X ray photoelectron spectrum, the binding energy of the elements were analyzed, which indicated that the quantivalence of barium, titanium and rare earth in BaTiO3 ceramics were variable, and resulted in the improving of the conductibility ofBaTiO3 ceramics. The results of TG DTA analysis showed that the thermal stability in high temperature of BaTiO3 ceramics penetrated with rare earth was better." @default.
- W2352208272 created "2016-06-24" @default.
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- W2352208272 date "2003-01-01" @default.
- W2352208272 modified "2023-09-25" @default.
- W2352208272 title "Studies of Gas Thermochemical Penetrating of Rare Earthto BaTiO_3 Ceramics and Their Electric Characteristics" @default.
- W2352208272 hasPublicationYear "2003" @default.
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