Synthesis and Characterization of forsterite nanopowder ceramic via mechanical activation
محورهای موضوعی : Journal of Nanoanalysis
Hassan GHEISARI
1
(Biomaterials Dep, University of Toronto)
کلید واژه: Ceramics Nanostructures X, ray diffraction SEM STA AAS,
چکیده مقاله :
This project investigates the synthesis of single-phase nano crystalline forsteritepowder by mechanical activation with subsequent annealing. To produceforsterite powder, a mixture of talc and magnesium oxide powders was first milledby a planetary ball mill, and then annealed at 1000 and 1200 8C for 1 h. Thesynthesized powder was characterized by X-ray diffraction (XRD), simultaneousthermal analysis (STA), scanning electron microscopy (SEM), and atomicabsorption spectrometry (AAS). The initial temperature of forsterite crystallizationwas reduced to about 825 8C after 20 h of mechanical activation. The forsteritepowder synthesized by 5 h of mechanical activation with subsequent annealingat 1000 8C for 1 h had crystallites 40 n min size. The particle size of this samplewas less than 500 nm.
