Preparation and mechanical properties of the MgAl2O4 transparent phosphor ceramics

Xue Bai; Zhen Li; Muyun Lei; Zhenli Pang

doi:10.1117/12.2067979

2 September 2014 Preparation and mechanical properties of the MgAl₂O₄ transparent phosphor ceramics

Xue Bai, Zhen Li, Muyun Lei, Zhenli Pang

Proceedings Volume 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging; 92841C (2014) https://doi.org/10.1117/12.2067979
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

MgAl₂O₄ transparent phosphor ceramics were fabricated by hot-pressing and hot isostatic pressing using high-purity ultrafine MgAl₂O₄ powder mixed with phosphor. The microstructures of transparent phosphor ceramics were characterized by SEM and EDS. Moreover, the hardness and bending strength of transparent ceramics were measured. Effect of phosphor concentration (0~20%) on microstructure, hardness and bending flexture of transparent ceramics was analyzed. It was found that phosphor doping plays an important role in improving the mechanical property of transparent ceramics. So applying this kind of transparent phosphor ceramic to LED components as packaging material can significantly improve the lifetime and reliability of LED products.

Citation Download Citation

Xue Bai, Zhen Li, Muyun Lei, and Zhenli Pang "Preparation and mechanical properties of the MgAl₂O₄ transparent phosphor ceramics", Proc. SPIE 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging, 92841C (2 September 2014); https://doi.org/10.1117/12.2067979

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KEYWORDS

Ceramics

YAG lasers

Light emitting diodes

Crystals

Doping

Magnesium

Scanning electron microscopy

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