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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

成分对烧结BAS(BaAl2Si2O8)凝胶玻璃形成的影响

杨觉明; 周万城; 包小平; 陈平   

  1. 西安工业学院 西安 710032
  • 收稿日期:2002-10-14 修回日期:2002-11-25 出版日期:2003-11-20 网络出版日期:2003-11-20

Effect of Composition on the Tendency of Forming BAS (Barium Aluminosilicate) Sintered Glass by Sol-Gel Process

YANG Jue-Ming; ZHOU Wan-Cheng; BAO Xiao-Ping; CHEN Ping   

  1. Xi an Institute of Technology; Xi an 710032; China
  • Received:2002-10-14 Revised:2002-11-25 Published:2003-11-20 Online:2003-11-20

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摘要： 采用XRD、SEM和拉曼光谱研究了溶胶-凝胶法制备的接近钡长石化学计量成分的BaO-Al2O3-SiO2系烧结玻璃形成趋势.结果表明,在本实验条件下,SiO2含量高和BaO/Al2O3比值大,有助于形成玻璃.BaO/SiO2比值大,形成[AlO4]四配位结构的Al2O3含量高.BaO/Al2O3与[AlO4]/Al3+的关系近似线性关系.建立了一个烧结BAS凝胶玻璃形成的判别式,计算了在实验成分范围内,玻璃形成区与析晶区的边界线.根据判别式得到的计算结果与实验结果相符.

关键词: 烧结玻璃, 铝硅酸钡, 溶胶-凝胶工艺, 判别式

Abstract: The effect of composition on the tendency of forming BAS (barium aluminosilicate) sintered glass with compositions near the theoretical composition of
barium feldspar by sol-gel process was studied by XRD, SEM and Raman spectrum. Results indicated that, in the experimental range, larger SiO2 content and larger
BaO/Al2O3 ratio were advantageous to glass formation. Increasing BaO/Al2O3 ratio causes an increase in the amount of alumina with [AlO4] structure. The
relationship between [AlO4]/Al3+ and BaO/Al2O3 can be expressed as a linear equation. A criterion for glass formation in the studied system was established. The
criteron showed good fitness with the experimental results.

Key words: sintered glass, barium aluminosilicate, sol-gel process, criteron

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