J. Mater. Sci. Technol. ›› 2010, Vol. 26 ›› Issue (5): 445-448.

• Research Articles • 上一篇    下一篇

Sol-gel preparation and infrared radiation property of boron-substituted cordierite glass-ceramics

王树明   

  1. 清华大学材料科学与工程系
  • 收稿日期:2010-01-12 修回日期:2010-04-27 出版日期:2010-05-31 发布日期:2010-06-01
  • 通讯作者: 王树明
  • 基金资助:

    国家自然科学基金

Sol-gel Preparation and Infrared Radiation Property of Boron-substituted Cordierite Glass-ceramics

Shuming Wang, Fenghua Kuang   

  1. School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, China
  • Received:2010-01-12 Revised:2010-04-27 Online:2010-05-31 Published:2010-06-01
  • Contact: Shu MingWang
  • Supported by:

    the National Nature Science Foundation of China (No. 50771014)

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摘要：

Boron for aluminum substitution in the cordierite structure has been examined by sol-gel preparation of different samples along the compositional junction Mg2Al4-xBxSi5O18 with x=0, 0.5, 1, 1.5. By increasing the x value from 0 to 1.5 the crystallization behavior changed accordingly. Proper amount B2O3 doping can promote the sintering of amorphous cordierite gel, effectively restrain the precipitation of μ-cordierite and enhance the crystallization of α-cordierite. The substitution of B3+ for Al3+ in cordierite crystal structure can effectively improve the near-infrared spectral emissivity of this cordierite based glass-ceramics.

关键词: Sol-gel, Glass-ceramics, Infrared radiation, B3+-substituted, Solid solution

Abstract:

Boron for aluminum substitution in the cordierite structure has been examined by sol-gel preparation of different samples along the compositional junction Mg2Al4-xBxSi5O18 with x=0, 0.5, 1, 1.5. By increasing the x value from 0 to 1.5 the crystallization behavior changed accordingly. Proper amount B2O3 doping can promote the sintering of amorphous cordierite gel, effectively restrain the precipitation of μ-cordierite and enhance the crystallization of α-cordierite. The substitution of B3+ for Al3+ in cordierite crystal structure can effectively improve the near-infrared spectral emissivity of this cordierite based glass-ceramics.

Key words: Sol-gel, Glass-ceramics, Infrared radiation, B3+ substitution, Solid solution