Siam Physics Congress 2015

Synthesis Thermoelectric Material Mg$_2$Si by Quartz Tube Vacuum Furnace from Starting Mg Powder and SiO$_2$ Rice Husk

21 May 2015, 13:00

3h 30m

Board: MNA-48

Poster presentation Material Physics, Nanoscale Physics and Nanotechnology Poster-3

Speaker

Phonlakit Khowjalern (Department of Physics, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, THAILAND 10520)

Description

In this work, magnesium silicide (Mg${}_2$Si) compounds were prepared by solid state reaction with sintering in quartz tube vacuum. Ball milling process is used in the mixture of magnesium (Mg) powder and pure silica obtained from thermal decomposition of rice husks. After that, the powder sample were sintered at 650$^{\circ}$C for 60, 120 and 180 minutes in quartz tube vacuum with argon atmosphere. The XRD patterns show the peak of Mg$_2$Si and MgO was dominant with all conditions. Subsequently, the chemical process to get rid of MgO.