Corrosion of reaction-bonded silicon-carbide by molten sodium carbonate

被引：0
|
作者：
Ning, Xiangmei [1 ]
Gao, Jiqiang [1 ]
Jin, Zhihao [1 ]
机构：
[1] Sch. of Mat. Sci. and Eng., Xi'an Jiaotong Univ., Xi'an 710049, China
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2001年 / 35卷 / 09期
关键词：
Corrosion - Corrosive effects - Kinematics - Molten materials - Oxidation resistance - Sintered carbides - Sodium compounds;
D O I：
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中图分类号：
学科分类号：
摘要：
Corrosion of reaction-bonded sillicon-carbide is made by molten sodium carbonate at 1000°C in air. Investigation shows that molten sodium carbonate accelerates the oxidation process of materials at high-temperature. The kinetics of corrosion includes three stages. The early stage is characterized by a period of weight loss caused by silica dissolution reaction. This is followed by a period of enhanced oxidation of liquid film. Finally, a protective silica layer forms below the melt. Molten sodium carbonate corrosion leads to a large amount of pit.
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页码：974 / 976
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