本論文主要針對鋁電解電容器（aluminum electrolytic capacitor）中的陰極箔（cathode foil）進行研究。除了合金成份探討之外，也針對不同溫度及時間的安定化處理（stablizing treatment）過程進行調查。 首先配製不同成份的合金，利用ICP-AES分析合金之化學成份。經620℃×24hr均質化處理、熱軋（t=6mm）直接冷軋至60μm，再進行不同溫度及時間的安定化處理。透過極圖分析（pole figure）及穿透式電子顯微鏡（TEM）了解鋁箔的集合組織（texture）及微組織結構。 在化學蝕刻時，控制重量損失率為30%。之後藉由掃描式電子顯微鏡（SEM）及光學顯微鏡（OM）觀察腐蝕孔洞的分佈及形態。探討安定化處理之條件及添加之元素，所造成的腐蝕組織對靜電容量之影響，以達到研發具高靜電容量的陰極鋁箔之目標。 由實驗結果得知：陰極鋁箔用1000系鋁合金，在滾軋成箔後進行80℃×1.0hr的安定化處理，可以使靜電容量達到最高值。在元素添加方面，未經安定化處理的鋁箔，以0.15%Cu的添加量，效果最佳；但進行安定化處理後，反而以添加0.3%Cu的鋁箔靜電容量可以達到最高值。而Si元素的添加，會使得腐蝕形態完全改變，海綿狀的腐蝕組織變成只有表面腐蝕，造成靜電容量大幅下降。雖然如此安定化處理仍然有提升靜電容量的效果。 The project aimed at studying the cathode foil of aluminum (1000 series) electrolytic capacitor. In addition to the composition, it also investigated the difference of stablizing treatment. First of all, adjusted the composition of ingot, and determined the chemical composition by ICP-AES technique. Second, the process of making Al-foil was homogenizaion treatment of ingot, hot rolling (t=6mm), then directly cold rolling to 60μm. Finally, Al-foil was carried out different stablizing treatment. The texture of Al-foil was analyzed by pole figure, and microstructure observation was used by transmission electron microscope (TEM). During the chemical corrosion, the rate of weight loss was controlled to 30%. To discuss the effect of capacitance caused by corrosion structure, the morphology of etched surface and cross section was observed by scanning electron microscope (SEM) and optical microscope (OM). The experiment was shown it can get highest capacitance which use 80℃×1.0hr stablizing treatment after cold rolling. About adding element, the result of adding 0.3% Cu is better when making stablizing treatment. But without making stablizing treatment, the capacitance of adding 0.15%Cu is highest. Adding Si element, the corrosion morphology is completely different. The corrosion structure changes from sponge shape to surface etching, causes the capacitance decreases substantially.
