Spatial ions distribution of the bonding interface in YAG/Nd:LuAG composite laser ceramic |
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| Authors: | Pande Zhang Benxue Jiang Yiguang Jiang Ge Zhang Shuilin Chen Jintai Fan Long Zhang |
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| Affiliation: | 1. Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai, China;2. University of Chinese Academy of Science, Beijing, China |
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| Abstract: | Composite YAG/Nd:LuAG transparent ceramics were fabricated by a thermal bonding process. The spatial distribution of ions around the original bonding interface of the YAG/Nd:LuAG composite laser ceramic was investigated. Around the original bonding interface, Lu3+ and Y3+ ions were replaced with each other in dodecahedral symmetry sites. Results from X‐ray photoelectron spectroscopy (XPS) and energy dispersive spectroscopy (EDS) quantitative chemical analyses positively show that the distance of Y3+ ions diffused in the LuAG part is about 35 μm, while Lu3+ ions’ diffused distance in the YAG part is about 5 μm. This corresponds to the diffusion coefficient of Y3+ ions and Lu3+ ions (DY=2.43 ×10?10 cm2/s and DLu=0.56×10?10 cm2/s at 1750°C). The formation of YxLu(3?x)Al5O12 polycrystal in the bonding section explains the complete combination of LuAG and YAG without a bonding interface. Moreover, no diffusion phenomenon of Nd3+ ions was detected near the original bonding interface. |
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| Keywords: | composites diffusion/diffusivity layered ceramics optical materials/properties reaction bonding |
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