Role of Heavy Metal Ions in the Formation of Oxyfluoride Glasses and Glass Ceramics
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第12期
论文作者：Min Liu Lijuan Zhao Yan Liu Zijian Lan Lifen Chang Yiming Li Hua Yu
文章页码：1213 - 1216
摘 要：In order to investigate the influence of different heavy metal ions on the formation of the oxyfluoride glasses and glass ceramics, samples with different Pb F2/Cd F2 ratios have been prepared by the melting quenching and thermal treatment method. The different effects of Pb2 tand Cd2ton the glass network structure are investigated by FTIR and Raman spectra. During the formation of glass network structure, Pb2 tprefers to break the Sie Oe Si bond and subsequently bond to F for charge compensation, and Cd2 tprefers to break the SieO eA l bond and is surrounded by O2. Pb2 tand F gather together and form the fluoride nanocrystals,while Cd2 tremains in oxide matrix after thermal treatment. Introduction of proper Cd F2 is important to adjust and control the glass network structure and crystallization process in the fabrication of the transparent glass ceramics.
Min Liu1，Lijuan Zhao1,2，Yan Liu1，Zijian Lan1，Lifen Chang1，Yiming Li1，Hua Yu1
1. The MOE Key Laboratory of Weak Light Nonlinear Photonics and School of Physics, Nankai University2. TEDA Applied Physics Institute, Nankai University
摘 要：In order to investigate the influence of different heavy metal ions on the formation of the oxyfluoride glasses and glass ceramics, samples with different Pb F2/Cd F2 ratios have been prepared by the melting quenching and thermal treatment method. The different effects of Pb2 tand Cd2ton the glass network structure are investigated by FTIR and Raman spectra. During the formation of glass network structure, Pb2 tprefers to break the Sie Oe Si bond and subsequently bond to F for charge compensation, and Cd2 tprefers to break the SieO eA l bond and is surrounded by O2. Pb2 tand F gather together and form the fluoride nanocrystals,while Cd2 tremains in oxide matrix after thermal treatment. Introduction of proper Cd F2 is important to adjust and control the glass network structure and crystallization process in the fabrication of the transparent glass ceramics.
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