摘要
通过理论分析和实验验证，证实冶金熔体泡沫演化过程中存在由球状泡沫到多面体泡沫的转型．泡沫转型前的演化速率可由伽利略数Ｇａ定性判断，而泡沫转型后的多面体泡沫破灭阶段，可以用量纲为一的因子Ｓａ来定性判断．应用泡沫转型理论，解释了冶金熔体与常温溶液泡沫衰减过程机理的差异，也给出了内生气源更容易发泡的原因．
Based on morphology, it is presented that morphotype conversion of foams in metallurgical melts would occur during foam evolution, which has been proved by experimental results. By means of morphotype conversion, a new interpretation on foams decay process was provided for promotion of kinetics on foaming. Characteristic numbers Ga and factor Sa were employed to be as criterion to qualitatively determine the decay rate before and after the morphotype conversion, respectively. The reasons also were given on contrast in foams stability from different liquid and gas source.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2000年第2期109-112,共4页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金!59574026
关键词
泡沫转型
冶金熔体
泡沫衰减
泡沫演化
foaming
morphotype conversion of foams
metallurgical melts
foams decay
