Abstract
The application of microwave synthesis – sintering to the fabrication of zirconolite (CaZrTi2O7), as a candidate waste form for plutonium immobilization, was demonstrated as an alternative to conventional solid state reactive sintering. Ceramics of near-theoretical density were produced with a rapid dwell time of just 10 min at 1400 °C, and overall throughput time of just 60 min. In comparison with processing at 1200 °C, elevation of the processing temperature to 1400 °C significantly improved the microstructure homogeneity and reduced the porosity. The ability to sinter in air presents the potential advantage and allows for flexible control of redox conditions.
Published Version
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