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https://open.uns.ac.rs/handle/123456789/15838
Nаziv: | Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density | Аutоri: | Savić S. Nikolić M. Aleksić O. Slankamenac M. Živanov M. Nikolić P. |
Dаtum izdаvаnjа: | 1-дец-2008 | Čаsоpis: | Science of Sintering | Sažetak: | In this work the DC resistivity of sintered nickel manganite NiMn 2O4 (NTC thermistor material) was studied as a function of additional powder activation time in a planetary ball mill (0, 5, 15, 30, 45 and 60 min). The activated powders and non-activated powder were sintered at different temperatures (900, 1050 and 1200°C) for an hour. Structural changes were analyzed using XRD. Sample density, porosity and DC resistivity were measured on the same sintered samples. Correlations between sample density, porosity, and intrinsic DC resistivity vs. additional powder activation time and the sintering temperature were made. It was noticed that the resistivity falls with the increase of sample density (or increase of the sintering temperature). | URI: | https://open.uns.ac.rs/handle/123456789/15838 | ISSN: | 0350820X | DOI: | 10.2298/SOS0801027S |
Nаlаzi sе u kоlеkciјаmа: | FTN Publikacije/Publications |
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