(1 福州大學(xué)材料科學(xué)與工程學(xué)院, 福州 350002
2 中南工業(yè)大學(xué)材料科學(xué)與工程系, 長(zhǎng)沙 410083)
摘 要: 分析了夾雜物(Al2O3等)的結(jié)構(gòu)特性和氣體(氫)在鋁凝固過(guò)程中的行為, 闡述了鋁熔體中夾雜與氫的相互依存關(guān)系, 提出夾雜與氫相互作用的“寄生機(jī)制”觀點(diǎn)。指出了夾雜的存在是氣體難以除凈的關(guān)鍵限制因素，排雜是除氣的基礎(chǔ)，并通過(guò)實(shí)驗(yàn)得到證實(shí)，對(duì)鋁液凈化實(shí)踐具有實(shí)際指導(dǎo)作用, 是提高鋁材冶金質(zhì)量的關(guān)鍵。
關(guān)鍵字: 鋁液凈化 夾雜物 熔劑過(guò)濾
（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
