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

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

• Novel Processing and Characterization Methods • Previous Articles Next Articles

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

Shuming Wang, Fenghua Kuang

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)

Abstract

Abstract:

Boron for aluminum substitution in the cordierite structure has been examined by sol-gel preparation of different samples along the compositional junction Mg₂Al_4-xB_xSi₅O₁₈ 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

Shuming Wang Fenghua Kuang. Sol-gel Preparation and Infrared Radiation Property of Boron-substituted Cordierite Glass-ceramics[J]. J Mater Sci Technol, 2010, 26(5): 445-448.

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

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