摘要
研究了气、冰晶石、铝液三相区介质在温度为 90 0℃时对碳化硅材料的侵蚀行为。分别用光学显微镜和扫描电镜观察了试样在熔液区域的横截面以及试样与三相区的界面形貌。研究结果表明 :碳化硅材料在熔融的冰晶石混合介质中表现出良好的抗腐蚀性能 ;铝液对碳化硅材料有侵蚀作用 ,而电解质、空气界面对碳化硅有较强的腐蚀行为。分析和探讨了各相介质对碳化硅材料的腐蚀机理以及腐蚀产物的相组成。
The corrosion behavior of silicon carbide materials in three phase zones of atmosphere, electrolyte, molten aluminium was investigated at 900 ℃. The specimen microstructures of cross section in the molten phases were observed by optical microscopy, and the interfacial morphology between sample and each phase was identified by SEM. The results indicate that, silicon carbide materials characterize good corrosion resistance at cryolite solution; molten aluminium can corrode silicon carbide, and the sample at atmosphere, electrolyte interface is corroded badly. The corrosive mechanism of different medium on silicon carbide materials and the phases constitute of corrosively formed materials were analyzed.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2003年第6期1447-1450,共4页
The Chinese Journal of Nonferrous Metals
基金
国家重点高科技发展 (863 )计划资助项目 (2 0 0 1AA3 3 3 0 10 )
