|About this Abstract
||Materials Science & Technology 2015
||Ceramic Optical Materials
||Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
||Jin-Myung Kim, Ha-Neul Kim, Young-Jo Park, Jae-Woong Ko, Jae-Wook Lee
|On-Site Speaker (Planned)
Transparent Polycrystalline Mg-spinel (TPS) was fabricated via sinter-HIP process from homogenous green compacts prepared by microfluidization and aqueous slip-casting. It was shown that microfluidization was superior particle-disintegrating process to conventional ball-milling. The unimodal particle size distribution of the microfluidized slurry enabled narrower pore size distribution in the green compact when combined with a slip-casting process. The improved uniformity in the particle coordination of a green compact facilitated rapid densification at lower pre-sintering temperature, resulting in a finer mean grain size in the pre-sintered specimen. On the other hand, the effect of casting mold (gypsum, Al2O3) was evaluated that casting on gypsum mold had additional effect by Ca-impurity infiltrated during casting process. After post-HIP treatment, the sub-micron grain size and high transmittance (ILT=83% at λ=550nm) was simulatneously achieved on the specimen fabricated via microfluidization and slip-casting on a gypsum mold.
||Planned: MS&T all conference proceedings CD