无机材料学报 ›› 2013, Vol. 28 ›› Issue (7): 780-784.DOI: 10.3724/SP.J.1077.2013.12592 CSTR: 32189.14.SP.J.1077.2013.12592

• 研究论文 • 上一篇    下一篇

超重力熔铸Y2O3-Al2O3-SiO2玻璃的晶化行为研究

杨增朝1,2, 刘光华2, 徐利华1, 李江涛2, 郭世斌2   

  1. (1. 北京科技大学 材料科学与工程学院, 北京100083; 2. 中国科学院 理化技术研究所, 北京100190)
  • 收稿日期:2012-10-01 修回日期:2012-11-15 出版日期:2013-07-20 网络出版日期:2013-06-19
  • 作者简介:杨增朝(1982–), 男, 博士研究生. E-mail: yangzengchao5@163.com
  • 基金资助:

    国家自然科学基金(50932006, 51002163); 北京市自然科学基金(2112043)

Investigation on Crystallization Behavior of Y2O3-Al2O3-SiO2 Glass Prepared by High-gravity Combustion Synthesis

YANG Zeng-Chao1,2, LIU Guang-Hua2, XU Li-Hua1, LI Jiang-Tao2, GUO Shi-Bin2   

  1. (1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China)
  • Received:2012-10-01 Revised:2012-11-15 Published:2013-07-20 Online:2013-06-19
  • About author:YANG Zeng-Chao. E-mail: yangzengchao5@163.com
  • Supported by:

    National Natural Science Foundation of China (50932006, 51002163); Beijing Natural Science Foundation (2112043)

摘要: 研究了以超重力熔铸方法制备的Y2O3-Al2O3-SiO2玻璃的晶化行为, 并结合相图分析了热处理条件对晶化过程的影响规律。实验结果表明, Y2O3-Al2O3-SiO2玻璃的晶化行为与热处理温度和SiO2含量密切相关。当热处理温度为1050℃时, 晶化后样品的相组成沿超重力场方向呈现出梯度分布, 自上而下分别为Al6Si2O13玻璃陶瓷、纯玻璃相、χ-Al2O3玻璃陶瓷。当退火温度为1100℃时, 析出晶相主要为Y3Al5O12及Y2Si2O7; 退火温度为1200℃时主要析出Y3Al5O12。因此, 以超重力熔铸法制备YAS玻璃结合后续热处理的工艺, 提供了一种快速制备YAS基微晶玻璃的新方法。

关键词: 超重力熔铸, YAS玻璃, 退火, 晶化

Abstract: The crystallization behavior of Y2O3-Al2O3-SiO2 glass prepared by high-gravity combustion synthesis was investigated by isothermal annealing experiments. The effect of annealing condition on the crystallization behavior of the glass was discussed according to the Y2O3-Al2O3-SiO2 ternary phase diagram. From experimental results, the crystallization behavior of the glass strongly depended on the annealing temperature and the content of SiO2. After being annealed at 1050℃, the sample showed a graded phase distribution along the high-gravity direction, consisting of Al6Si2O13 glass-ceramic, pure glass and χ-Al2O3 glass-ceramic. At annealing temperature of 1100℃, Y3Al5O12 and Y2Si2O7 were precipitated as the major crystalline phases. When the annealing temperature further increased to 1200℃, the predominant crystalline phase was Y3Al5O12. The research provides a possible way to prepare Y2O3-Al2O3-SiO2 glass-ceramics by integrating high-gravity combustion synthesis with post annealing treatment.

Key words: high-gravity combustion synthesis, Y2O3-Al2O3-SiO2 glass, annealing, crystallization

中图分类号: