Influence of Bi2O3 on microstructure and electrical properties of ZnO-SnO2 ceramics
Nikolić, Maria Vesna
Minić, Dragica M.
Nikolić, Pantelija M.
Ristić, Momčilo M.
ContributorsRistić, Momčilo M.
Article (Published version)
MetadataShow full item record
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).
Keywords:electrical properties / microstructure / zinc stannate / sintering
Source:Science of Sintering, 2007, 39, 3, 229-240
- Belgrade : International Institute for the Science of Sintering