(1 福州大学材料科学与工程学院, 福州 350002
2 中南工业大学材料科学与工程系, 长沙 410083)
摘 要: 分析了夹杂物(Al2O3等)的结构特性和气体(氢)在铝凝固过程中的行为, 阐述了铝熔体中夹杂与氢的相互依存关系, 提出夹杂与氢相互作用的“寄生机制”观点。指出了夹杂的存在是气体难以除净的关键限制因素，排杂是除气的基础，并通过实验得到证实，对铝液净化实践具有实际指导作用, 是提高铝材冶金质量的关键。
关键字: 铝液净化 夹杂物 熔剂过滤
（1 College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002, P. R. China
2 Department of Materials Science and Engineering,
Central South University of Technology, Changsha 410083, P. R. China）
Abstract:Based on the analyses of the structures of inclusions(Al2O3, etc) and the behavior of hydrogen during solidification of molten aluminum, the interdependent relation between inclusions and hydrogen in molten aluminum was expounded, and the interactive mechanism between inclusions and hydrogen ("the parasitic mechanism")was put forward. It was pointed out that the presence of inclusions is the main restrictive factor of elimilating hydrogen effectively, and removing inclusions from molten aluminum is fundamental of eliminating hydrogen when purifying molten aluminum. At the same time, views above were testified tentatively by means of experiments, they will play guiding role in the practices of purification of molten aluminum. This result will be the key to improving metallurgical quality of aluminum sheet.
Key words: purification of molten aluminum; inclusions; flux filtration
