Yazar "Ünal, Fatma" için listeleme
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Effect of Particle Morphology on Physical, Mechanical and Wear Properties of Cobalt Metal Powders
Bulut, Berrak; Ünal, Fatma; Baydoğan, Murat; Kayalı, Eyup Sabri (Springer India, 2021)Cobalt is used in applications that require high densities and good mechanical properties. Cobalt powder is used in batteries, cemented carbides, stainless steel, machine tools and also in manufacturing of metal matrix ... -
Effects of dopant rate and calcination parameters on photoluminescence emission of Y2O3:Eu3+ phosphors: A statistical approach
Ünal, Fatma; Kaya, Faruk; Kazmanli, Kursat (Elsevier Sci Ltd, 2019)In this study, Y2O3:Eu3+ phosphorescent powders with different dopant rates were synthesized by sol-gel method. Statistical experimental design methods were used to investigate the effects of calcination temperature (800, ... -
Fabrication and characterization of Yb-doped Y2O3 powders and thin films
Kaya, Elif Emil; Ünal, Fatma; Kazmanlı, Kürşat; Gürmen, Sebahattin (Carl Hanser Verlag, 2020)Yttrium oxide (Y2O3) and ytterbium (Yb)-doped Y2O3 particles were synthesized via the sol-gel method from the aqueous solution of their nitrate salts. The synthesized powders were then deposited on Corning glass substrates ... -
Modelling of relation between synthesis parameters and average crystallitesize of Yb2O3 nanoparticles using Box-Behnken design
Ünal, Fatma; Kaya, Faruk (Elsevier, 2020)A straightforward wet chemical method has been applied for the fabrication of Yb2O3nanoparticles (NPs) fromytterbium nitrate solution by using ammonium carbonate as precipitation agent. Effects of precursor molarity(0.1, ... -
Photoluminescence Investigation of Tb Doped Yb2O3 Phosphors Produced by Precipitation Method
Ünal, Fatma (2021)In this study, un-doped and Tb doped ytterbium oxide (Yb2O3:Tb3+) particles with different dopant rates (2, 4, 6 and 8 at. %) were produced by precipitation method, followed by subsequent calcination at 1000 °C for 2 h. ... -
Production and characterization of re3+:Yb2o3 nanoparticles
Ünal, Fatma; Kazmanlı, Kürşat (Trans Tech Publications Ltd, 2021)In this study, doped ytterbium oxide (Yb2O3) nanoparticles (NPs) with different dopant type (Eu and/or Tb) and undoped were synthesized by wet chemical method using nitrate salt as a starting source. Afterwards, they were ... -
Production of Un-Doped and Er-Doped Y2O3 Thin Films by Electron Beam Evaporation Method
Ünal, Fatma; Kazmanli, Kursat (Springer, 2019)In this study, un-doped and doped yttrium oxide (Y2O3) powders with different erbium concentrations were synthesized using sol-gel method. The synthesized powders were investigated by Raman analysis and the evolution of ... -
Synthesis, characterization and radioluminescence properties of erbium-doped yttria phosphors
Ünal, Fatma; Kaya, Faruk; Kazmanlı, Kürşat (Springer, 2021)Radioluminescence (RL) behaviour of erbium-doped yttria nanoparticles (Y2O3:Er3+ NPs) which were produced by sol-gel method was reported for future scintillator applications. NPs with dopant rates of 1at%, 5at%, 10at% and ... -
ZrO2 coating via e-beam evaporation on PE separators for lithium-ion batteries
Sivlin, D.; Ünal, Fatma; Karahan, Deniz; Kazmanlı, Kürşat; Keleş, Özgür (Springer Heidelberg, 2021)In this paper, ZrO2 is deposited on a polyethylene-based separator via electron beam evaporation method. The analyses reveal that the application of the ceramic-based coating enhances the electrolyte uptake capability from ...
