Preparation of Forsterite by Solid State Synthesis Process and its Dielectric Properties
2012 ◽
Vol 534
◽
pp. 110-113
◽
Keyword(s):
Using basic magnesium carbonate (Mg(OH)2•4MgCO3•6H2O) and SiO2 as raw materials, forsterite (Mg2SiO4) was prepared by solid state synthesis process. The optimal process for synthesizing Mg2SiO4 was obtained by adjusting Mg/Si molar ratio and sintering temperature. The crystal phase of the obtained Mg2SiO4 powder was determined by X-ray diffraction (XRD). The results indicate that the single-phase Mg2SiO4 powder can be obtained when the mixtures with Mg/Si molar ratio of 2.05~2.01 were sintered at 1350°C for 3h in the air. The as-prepared Mg2SiO4 ceramic samples which were sintered at 1300~1360°C showed better dielectric properties with εr=7.4 and tanδ =7.5×10-4.
2011 ◽
Vol 284-286
◽
pp. 2268-2271
◽