• Miazga, Aleksandra
• Zygmuntowicz, Justyna
• Konopka, Katarzyna
• Kamińsk, Łukasz

Abstract

The aim of this study was the synthesis and characterization of nickel aluminate spinel (NiAl2O4) prepared from the equilibrium mixture of Al2O3 and NiO. The materials were produced by the solid phase synthesis. In the experiments the following powders were used: α-Al2O3 TM-DAR from Taimei Chemicals (Japan) of an average particle size 133 nm and density 3.96g/cm3 and NiO powder from Sigma-Aldrich of an average particle size 200 nm and density 6.67 g/cm3. The preliminary calcination was carried out at two temperatures: 1000°C and 1200°C. The final sintering of the samples was performed at 1600°C. The characteristics of the powder after calcination and sintered samples were performed using X-ray diffraction studies (XRD), energy dispersive X-ray analysis (EDS) and scanning electron microscopy (SEM). The studies on the composites confirmed the presence of nickel aluminate (NiAl2O4) in whole volume of the material.

Topics

• density
• nickel
• phase
• scanning electron microscopy
• x-ray diffraction
• experiment
• composite
• Energy-dispersive X-ray spectroscopy
• sintering