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无机材料学报

无机材料学报

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掺铒磷酸盐玻璃反应气氛法除水的研究

杨钢锋1; 赵三银1,2; 邓再德1; 孙家森1; 姜中宏1,3   

  1. 1. 华南理工大学特种功能材料及其制备新技术教育部重点实验室 广州; 广州 510640; 2. 广东省韶关学院化学系; 韶关 512005； 3. 中国科学院上海光学精密机械研究所; 上海 201800
  • 收稿日期:2004-09-20 修回日期:2004-10-26 出版日期:2005-09-20 网络出版日期:2005-09-20

Removal of OH Groups in Er3+)-doped Phosphate Glasses by Reaction Atmosphere Process

YANG Gang-Feng1; ZHAO San-Yin1,2; DENG Zai-De1; SUN Jia-Sen1; JIANG Zhong-Hong1,3   

  1. 1. Key Laboratory of Specially Functional Materials and Advanced Manufacturing Technology; South China University of Technology; Ministry of Education; Guangzhou 510640, China; 2. Department of Chemistry; Shaoguan College; Shaoguang 512005, China; 3. Shanghai Institute of Optics and Fine Mechanics; Chinese Academy of Sciences; Shanghai 201800, China
  • Received:2004-09-20 Revised:2004-10-26 Published:2005-09-20 Online:2005-09-20

PDF (PC)

1302

被引次数

7

摘要： 制备了不同含水量的掺铒磷酸盐玻璃,研究了各种工艺参数对反应气氛法除水效果的影响.结果表明由鼓泡气体带入的除水剂是玻璃除水的主要动力;在通气最初阶段的除水速率最快,并且提高除水温度、增大通气流量均有助于提高除水效率;结合实验从反应热力学角度讨论了除水机理,并指出在玻璃熔体中除水反应受熔体“笼效应”影响,反应速率大小取决于OH与CCl4形成偶遇对概率的大小.

关键词: 掺铒磷酸盐玻璃, 反应气氛法, 工艺参数, 热力学理论

Abstract: Er3+-doped phosphate glasses with various concentrations of OH groups were fabricated. The effects of technological parameters on result of Reaction Atmosphere Process were investigated.
The dehydrate process was discussed by thermodynamic theory of open system. The results show that the dehydration reagent in the bubbling gas is the main dynamic force of dehydration reaction, and the OH groups are removed rather rapidly at the initial stage. Elevating temperature and increasing
bubbling flux can conduce to the increase of dehydration efficiency. The rate of dehydration in the glass melt is affected by ‘cage effect’. The dehydration rate is controlled by the probability of
forming encounter twins between OH and CCl4.

Key words: Er3+-doped phosphate glass, reaction atmosphere process, technological parameters, thermodynamic theory

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