摘要
交流电解腐蚀扩面技术是低压铝电解电容器小型化的关键。分析了电极铝箔在盐酸溶液中交流负半周液相传质过程及交流电频率对电极表面几何结构的影响，结果表明，如果本体盐酸浓度ｃ０，外加阴极电流密度ｉａｐｐｌ和交流电的频率ｆ满足：｛ｃ０｝ｍｏｌ·Ｌ－１／｛ｉａｐｐｌ｝Ａ·ｃｍ－２≤５８７｛ｆ｝Ｈｚ·（｛ｆ｝Ｈｚ＋１０．４）－２，则Ａｌ３＋就可能沉淀形成腐蚀膜。控制盐酸浓度，阴极电流密度和交流电频率可改善腐蚀膜品质。
The conditions of etch film produced in
the negative half cycle of AC electroetching of Al capacitor in HCl solution is analyzed by taking
into account diffusion and electrical migration of H + in the electrolyte, as well as the variations
of electrode morphology with electroetching frequency The results indicte that it is possible for
Al 3+ to be precipitated if bulk HCl concentration( C 0), cathodic current density( i appl )
and the etching frequency( f ) cansatisfy the relation: C 0 i oppl ≤587 f ( f
+10 4) 2
出处
《电子元件与材料》
CAS
CSCD
1999年第2期8-10,共3页
Electronic Components And Materials
