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14 July 2015 Diauxic growth and microstructure of grain interfaces in thermal bonding Yb:LuAG/LuAG ceramic
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Abstract
Transparent composite Lutetium aluminum garnet (LuAG) ceramics were successfully synthesized by thermal diffusion bonding method. Three isothermal holding temperature of 1450°C, 1600°C, 1780°C for 10h under vacuum were used to study the changes of bonding interface morphology, Optical microscope, SEM and laser interferometer (GPI-XP,zygo) study show that diauxic growth of grain interface appears when the thermal bonding holding temperature increased. The sintering mechanism of diauxic growth of grain interface during the thermal diffusion bonding was also discussed using diffusion theory. The diauxic growth of grain interface provides us the possibility to get high quality composite laser ceramics as we designed.
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Chunlin Zhou, Benxue Jiang, Jintai Fan, Xiaojian Mao, Long Zhang, and Yongzheng Fang "Diauxic growth and microstructure of grain interfaces in thermal bonding Yb:LuAG/LuAG ceramic", Proc. SPIE 9532, Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers, 95322I (14 July 2015); https://doi.org/10.1117/12.2194335
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