中南大学学报（自然科学版）2011，Vol.42Issue(3)：588-594,7.
低温电解质[K3AlF6Na3AlF6]-AlF3-A12O3熔体中TiB2-C复合阴极的耐腐蚀性能
Corrosion resistance of TiB2-C cathode composites for aluminum electrolysis in[K3AlF6/Na3AlF6]-AlF3-Al2O3 melts
摘要
Abstract
Pitch, furan, phenolic aldehyde and Epoxy based TiB2-C cathode composites were prepared in the mould pressing-baking process, and their corrosion resistance in [K3AlF6/Na3AlF6]-AlF3-Al2O3 melts was studied.The results show that no matter what kind of binder is used, TiB2-C cathode composites have the good wetting property by liquid aluminum.Pitch based TiB2-C cathode composite has the poor corrosion resistance, and its corrosion rate and penetration rate of alkali metals(K, Na) is 8.09 mm/a and 10.6 mm/h respectively.In contrast, phenolic aldehyde based TiB2-C cathode composite has the stronger corrosion resistance, and its corrosion rate and penetration rate of alkali metal is 3.05 mm/a and 4.72 mm/h, respectively, which decreases by 62.3％ and 55.5％.Compared with pitch, resin based TiB2-C cathode composites have stronger resistance ability to penetration of alkali metals.Among them, phenolic aldehyde based TiB2-C cathode composite exhibits the strongest resistance ability to penetration of alkali metals.The use of resin as adhesive can improve the corrosion resistance of TiB2-C cathode composites to some extent.关键词
铝电解/低温电解/黏结剂/TiB2-C 复合阴极/耐腐蚀性能分类
矿业与冶金引用本文复制引用
张凯,方钊,吕晓军,赖延清,李劼..低温电解质[K3AlF6Na3AlF6]-AlF3-A12O3熔体中TiB2-C复合阴极的耐腐蚀性能[J].中南大学学报（自然科学版）,2011,42(3):588-594,7.基金项目
国家重点基础研究发展规划项目(2005CB623703) （2005CB623703）
国家高技术研究发展计划项目(2008AA030502) （2008AA030502）
国家科技支撑计划项目(2009BAE85B02)" （2009BAE85B02）
