Претраживање
Приказ резултата 1-10 од 18
Intrinsic resistivity of sintered nickel manganite vs. powder activation time and density
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2008)
In this work the DC resistivity of sintered nickel manganite NiMn2O4 (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 ...
Electrical properties of mechanically activated zinc oxide
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2006)
Microstructural properties of a commercial zinc oxide powder were modified by mechanical activation in a high-energy vibro-mill. The obtained powders were dry pressed and sintered at 1100 degrees C for 2 h. The electrical ...
Termoelektrična i magnetna svojstva NaCo2-xCuxO4 (x=0; 0,01; 0,03; 0,05) / Thermoelectric and magnetic properties of NaCo2-xCuxO4 (x = 0; 0,01; 0,03; 0,05)
(Univerzitet u Beogradu, Fakultet za fizičku hemiju, 2017)
Predmet ove doktorske disertacije je ispitivanje uticaja dveju različitih metoda sinteze keramičkih prahova i malih količina Cu2+ kao dopanta na fazni i hemijski sastav, mikrostrukturu, termoelektrična i magnetna svojstva ...
Analysis of early-stage sintering mechanisms of mechanically activated BaTiO3
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2006)
Barium-titanate powder was mechanically activated in a planetary-ball mill for 60 and 120 minutes. Non-isothermal sintering of non-activated and activated powder samples was investigated using a dilatometer in the temperature ...
Investigation of zinc stannate synthesis using photoacoustic spectroscopy
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2007)
Mixtures of ZnO and SnO2 powders, with molar ratio of 2:1, were mechanically activated for 40, 80 and 160 minutes in a planetary ball mill. The resulting powders were compacted into pellets and non-isothermally sintered ...
Ispitivanje sinterovane cink-kalaj-oksidne keramike fotoakustičnom spektroskopijom / Photoacoustic spectroscopy investigation of sintered zinc-tin-oxide ceramics
(Savez hemijskih inženjera, Beograd, 2007)
Prahovi ZnO i SnO2 pomešani u molarnom odnosu 2:1 mehanički su aktivirani u planetarnim mlinu sa kuglama u intervalu od 10 do 160 minuta. Dobijene smeše presovane su i izotermski sinterovane na 1300 °C, dva sata. Uzorci ...
Synthesis of BaTiO3 from a mechanically activated BaCO3-TiO2 system
(Međunarodni Institut za nauku o sinterovanju, Beograd, 2008)
In this article the solid state reaction of BaTiO3 formation from a mechanically activated BaCO3-TiO2 system has been investigated. An equimolar mixture of BaCO3 and TiO2 powders was activated in a planetary ball mill in ...
Poboljšanje svojstava veziva sa velikim udelom elektrofilterskog pepela primenom postupaka mehaničke i hemijske aktivacije / Improving properties of high volume fly ash binder by mechanical and chemical activation
(Savez inženjera i tehničara Srbije, 2020)
Veziva sa velikim udelom elektrofilterskog pepela (EFP) se odlikuju dugim vremenima vezivanja i malim početnim čvrstoćama. Primenom metoda mehaničke i/ili hemijske aktivacije moguće je značajno povećati reaktivnost EFP, ...
Performance of ternary cement binders containing high volume of fly ash and fluid catalytic cracking catalyst residue
(Materials Research Society of Serbia, 2022)
The use of binders based on waste materials in construction industry has both ecological and
economic advantages over the use of commercial Portland cements (PC). Preserving the natural
resources needed for PC production, ...
Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
(Belgrade : Institute for Multidisciplinary Research of the University of Belgrade, 2017)
Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for ...