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Preparation and Oxidation Resistance of the Borate Glass Coating on Graphite Anode

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Abstract:

The protection coating, which was used on graphite anode, was developed. The materials were SiO2, B2O3 and soluble glass as binder. The micrographic pattern, the phase composition and the components of borate glass coating were analyzed. The results indicated that the coating was morphology of borate glass at 700~850°C, the components were SiO2, and B2O3 from XRD analysis, the coating could permeate into the pores of the graphite anode and seal the cracks developed by the coating, and it was adhesive strongly to the graphite anode from SEM analysis. The effects of the temperature and time on oxidation weight loss ratio and oxidation rate of graphite anode coating were observed and analyzed. The mechanism of oxidation resistance of the coating layer was explained. In addition, the thermal cycle experiments with the borate glass coating were done at 800°C and 850°C, and the results demonstrated the sample had good ability of resistance to thermal shock.

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High-Performance Ceramics VI View Preview

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Periodical:

Key Engineering Materials (Volumes 434-435)

Pages:

469-473

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.434-435.469

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Online since:

March 2010

Authors:

Xiao Hua Yu, Gui Sheng Zeng, Gang Xie, Rong Xing Li

Keywords:

Boron Trioxide, Coating, Graphite Anode, Oxidation Resistance

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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