Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics | Zendy

Tamara Ivetić | Zendy; Maria Vesikolić | Zendy; Miloš P. Slankamenac | Zendy; Miloš B. Živanov | Zendy; Dragica M. Minić | Zendy; P.M. Nikolić | Zendy; Mira Ristić | Zendy

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Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics

Author(s) -

Tamara Ivetić,

Maria Vesikolić,

Miloš P. Slankamenac,

Miloš B. Živanov,

Dragica M. Minić,

P.M. Nikolić,

Mira Ristić

Publication year - 2007

Publication title -

science of sintering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.309

H-Index - 25

eISSN - 1820-7413

pISSN - 0350-820X

DOI - 10.2298/sos0703229i

Subject(s) - materials science , microstructure , scanning electron microscope , electrical resistivity and conductivity , ceramic , ball mill , bismuth , analytical chemistry (journal) , composite material , phase (matter) , metallurgy , chemistry , electrical engineering , chromatography , organic chemistry , engineering

The effects of small amounts (0.5; 1.0 and 1.5 mol. %) of bismuth oxide on the microstructure and electrical properties of ZnO-SnO2 ceramics have been studied. Starting powders of ZnO and SnO2 were mixed in the molar ratio 2:1. After adding Bi2O3 this mixture was mechanically activated for 10 minutes in a planetary ball mill, uniaxially pressed and sintered at 1300ºC for 2h. The phase composition of the sintered samples was analyzed by X-Ray Diffraction (XRD) and by Energy Dispersive Spectrometer (EDS). Morphologies were examined by Scanning Electron Microscopy (SEM). An Impedance/Gain Phase Analyzer (HP 4194A) was used to measure the impedance spectra (100Hz - 10MHz) at different temperatures. The electrical DC resistivity/conductivity at different temperatures was measured using a High Resistance Meter (HP 4329A)

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