Ba(Mg1/3Ta2/3)O3, BMT, was synthesized and sintered by microwave processing at 2.45 GHz. Appropriate amounts of BaCO3, MgO, and non-stoichiometric Ta2O5-x were used as starting materials for the synthesis. BMT was obtained by heating the precursors in a multimode microwave cavity of 2 kW between 900 °C and 1300 °C for just 20 min. The synthesis was carried out in N2 atmosphere to prevent the oxidation of Ta2O5-x. The perovskite BMT starts forming at 900 °C and becomes single phase material at 1300 °C. The sintering of BMT was carried out in a single mode microwave cavity for 5 to 30 min at 1400 °C to 1600 °C without using any sintering aid. A relative density of 97% was obtained in 30 min of microwave sintering at 1600 °C. In contrast, it was found that to achieve the same densification, it requires 6 h of soaking at the same temperature in conventional sintering process.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering