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Meeting Materials Science & Technology 2015
Symposium Ceramic Optical Materials
Presentation Title Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
Author(s) Jin-Myung Kim, Ha-Neul Kim, Young-Jo Park, Jae-Woong Ko, Jae-Wook Lee
On-Site Speaker (Planned) Jin-Myung Kim
Abstract Scope 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.
Proceedings Inclusion? Planned: MS&T all conference proceedings CD

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Cladded Single Crystal Fibers
Creation of New Material Science on Optical Ceramics
Effects of Varied Heat Treatments on Precipitation of Alumina in Astoichiometric Magnesium Aluminate Spinel
Fabrication of Transparent Magnesium Aluminate Spinel Ceramics using Two Kinds of Spinel Powder with Different Particle Sizes
Fundamental Study in the Processing of Transparent Ceramics
Highly Transparent Polycrystalline YAG Ceramics for Optical Applications
Laser Oscillation of Lu-based Oxide Ceramics by Spark Plasma Sintering
Low Absorption Spinel Windows for High Energy Lasers
NMR Spectroscopy of Paramagnetic Doped Ceramics to Determine Site Occupancy and Distribution
Novel Glass and Glass Ceramic Scintillators for Gamma-ray and Neutron Detection
Polycrystalline Transparent Yttrium Aluminum Garnet for Optical Applications
Praseodymium-doped SiAlON Red Phosphors Prepared by Polymer-derived Method
Processes and Characterizations of Ceramic Optical Fibers
Spark Plasma Sintering of Transparent Ceramics and Unusual Grain Growth
Synthesis and Processing of Transparent Ceramic Scintillators for Nuclear Radiation Detection
The Role of Scattering and Absorption on the Optical Properties of Birefringent Polycrystalline Ceramics: Modeling and Experiments
Transparent Ceramic Scintillators
Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
Transparent Spinel by Microwave Sintering

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