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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 3    June 2002

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Anticorrosion properties of enamels with
high B2O3-P2O5-AlPO4 content in
molten aluminum
ZHOU Ming(周  鸣), LI Ke(李  克), SUN Bao-de(孙宝德),
SHU Da(疏  达), WANG Jun(王  俊)

School of Materials Science and Engineering,
Shanghai Jiaotong University, Shanghai 200030, China

Abstract:The new enamels with high H3BO3-(NH4)2HPO4-AlPO4 content were studied, and the melting temperature of the enamels was adjusted by adding carbonate of alkali metal and alkaline earth metal. The enamels could spread slightly in the molten Al alloy observed by SEM and experiment. The components of the enamels were not detected with electron probe (EDAX-S-520) on the interface of Al alloy, but elemental Si of aluminum alloy was found in the silica-free enamels. Moreover, the components of the boron-free enamels were detected on the interface of Al alloy. The results show that the enamels with high B2O3-P2O5-AlPO4 content are resistant to the corrosion of molten Al.

 

Key words:  enamel; molten Al; corrosion; interface; electron probe

ISSN 1672-7029
CN 43-1423/U

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