|About this Abstract
||Materials Science & Technology 2012
||MS&T'12 Poster Session
||B15: Microwave Sintering of Carbide and Oxide Nanomaterials
||Aneeruddha Bulbule, Katarzyna Sabolsky, Edward Sabolsky, Stan Morrow
|On-Site Speaker (Planned)
Sintering of structural oxide and carbide compositions involves high temperature treatment which results in typical grain growth processes. In the case of nanomaterials, the high temperature processing negates potential benefits of the fine grain size and high surface area of nanomaterials due to coarsening. The objective of this work is to investigate methods of thermal processing carbide and oxide ceramic compacts composed of nano-scale precursor powders utilizing microwave sintering technologies. The goal is to retain grain sizes for the ceramic <0.1 μm while attaining >97% theoretical density. The compositions focused upon in this work were B<SUB>4</SUB>C and doped-CeO<SUB>2</SUB>. Pellets were fabricated from both nano- and micron-size precursor powders for comparison purposes, and the samples were thermally processed between 1200-2000°C utilizing a 6 kW microwave furnace (2.45 GHz) with a SiC coupling container. The effects of the processing techniques to the final density, microstructure and mechanical properties were characterized.
||Definite: A CD-only volume