摘要
用电化学方法研究了冰晶石熔液中沉积铝的溶解损失。研究表明，铝溶解量正比于溶解时间，溶解损失速度为８３．３±６．０ｍｇ·ｃｍ－２·ｈ￣（－１）。极化条件对溶解损失没有影响，表明铝溶解没有电化学特性。测定结果证实了溶解过程为铝／熔液界面边界层中扩散控制的物理模型；并求得溶解铝在冰晶石熔浓中的扩散系数为Ｄ＝１．１１×１０￣（－４）ｃｍ￣２·ｓ￣（－１），与文献值在同一数量级。
The aluminium dissolution has been investigated by electrochemical meth-ods.It is found that the amount of aluminium dissolution is proportional tothe time of dissolution,and dissolution rate is 83.3±6.0 mg· cm￣(-2)·h￣(-1).Thedissolution rate of aluminium is independent of the polarized conditions,which indicates that the process is of a physical nature rather than of electro-chemical nature. The obtained results verify that dissolution rate is control-led by mass transport of dissolved metals from the elec...
出处
《有色金属》
CSCD
1994年第4期62-66,58,共6页
Nonferrous Metals
关键词
冰晶石熔液
铝
溶解损失
扩散
cryolite melt
aluminium
dissolution
diffusion
