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Meeting Materials Science & Technology 2020
Symposium Glasses, Optical Materials, and their Functional Applications: Current Issues in Science & Technology
Presentation Title Development of YAG-alumina Composites for the Lightening Applications
Author(s) Sekyung Chang, Robert E Kusner, Fritz Grensing, Wenbo Zhang
On-Site Speaker (Planned) Sekyung Chang
Abstract Scope A cerium doped YAG (Y3Al5O12)-alumina composite was developed by solid state sintering in air. Low grade (3N) yttria and, ceria (or cerium nitrates) powder, and alumina obtained from the alumina grinding media eroded during ball milling of the oxide powder mixture were used as starting materials. With a small amount of silica-based sintering aids, the YAG-alumina composites can be sintered in air to near theoretical density at a temperature as low as 1525oC for 8 hours. The amount of ceria in YAG-alumina composites affects not just the intensity of the light output but also in the densification of the YAG-alumina composites. The optical efficiency of YAG-alumina composites as a function of cerium concentration, sintering temperature as well as the content of alumina phase will be presented.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

2020 Alfred R. Cooper Young Scholar Award Presentation: Beyond the Average: A Statistical Mechanical Exploration of Topological Fluctuations in Glass-Forming Systems
Cooper Distinguished Lecture: Exploring the Amorphous State of Matter by Roaming About the Network Building Blocks
Decoding Structure-Dynamics Correlations in SiO2 Supercooled Liquid by Machine Learning
Development of YAG-alumina Composites for the Lightening Applications
Effect of Nanoscale Phase Separation on the Fracture Behavior of Glasses: Toward Tough, Yet Transparent Glasses
Effect of Transition Metal Impurities on the Properties of ZnSe Single Crystals
Elucidating Defect Behaviors and Lithium Ion Diffusion Mechanisms in Solid State Electrolytes from Atomistic Computer Simulations
Enhanced Optical Nonlinearity in Bismuth Borosilicate Glass Dispersed with Eu2O3 Stabilized Gold Nanoparticles
Glasses beyond Megabar Pressures
Melt-Quenching vs. Sol-gel vs. Vapor Deposition vs. Irradiation: Influence of the Synthesis Method on the Structure of SiO2
Photo-elastic Confirmation of Fast Surface Relaxation of Silica Glasses in the Presence of Water
Relative Roles of O and Si in Crack Nucleation and Propagation Mechanisms in Amorphous Silica
Surface Reactivity of Multi-component Glasses
Terahertz Time-domain Spectroscopy of Glasses

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