Advanced ceramics

Nano-forsterite Powder Made of Natural Silica Sand

Nano-forsterite  powder  with  natural  silica  sand and  magnesium powder  as  the  raw  materials  have  been successfully synthesized. The silica sand was purified followed by a coprecipitation process to obtain colloidal silica. The magnesium powder  was dissolved in a chloric acid solution to obtain MgCl2 solution. The nanoforsterite powder was synthesized using a sol-gel method which included the mixing the colloidal silica and the MgCl2 solution with various aging  and  filtering processes.  The  samples  were  dried  at  100 °C  using  a  hot  plate  and then  the  dried  powders  were calcinated at 900 °C for 2 hours.The samples were characetised for their elements and phase compositions using X-ray Flourescence (XRF) and X-ray Diffraction (XRD) methods, respectively. The diffraction data were qualitatively analyzed using Match!2 software and quantitatively using Rietica software. The crystallite size was verified using Transmission Electron Microscopy (TEM). Results of XRD data analysis showed that the forsterite content reached up to 90.5% wt. The TEM average crystallite size was approximately 50 nm.

Advanced Ceramics

The XRD pattern (CuKa radiation) for samples calcined at 900⁰C for 2 hours.

 

Advanced Ceramics

The TEM image of sample calcined at 900 ºC for 2 hours