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題 名 | Electrochemical Characteristic Investigation of High Purity Aluminun Foil=高純鋁箔電化學特性之研究 |
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作 者 | 鄭陽助; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 19:1 1988.01[民77.01] |
頁 次 | 頁31-37 |
分類號 | 468.4 |
關鍵詞 | 高純; 電化學; 鋁箔; |
語 文 | 英文(English) |
中文摘要 | 電蝕高純鋁箔常用在電解電容器中當做陽極。氧化鋁薄膜對電蝕程序具有顯著的影響。為了研究高純鋁箔在硼酸溶液中之氧化膜生成情形,低速線性掃瞄電壓法(LSV)被採用為主要研究法。一般認為鋁箔氧化膜形成的速率與輸入的電量成正比。本實驗研究對氧化膜形成與溶解之機構有所說明。在正向掃瞄進行時,所輸入的電量用以形成壁障層和多孔層的氧化膜;而在逆向掃瞄時,類僅溶解先前生成的氧化膜。在此種考慮下,可由正向掃瞄與逆向掃瞄所得之電量差而得此輸入電量的淨值,此電量淨值與硼酸的pH值有關。此外,如以正向掃瞄之電量積分值表示鋁箔的表面活性狀態。用此解析法說明鋁箔的表面能量,則在不同情況下其電量積分值之比較,很適合於決定電蝕鋁箔製造過程中,其電蝕及清淨工程所需最適pH值預測最佳氯離子濃度。 |
英文摘要 | The etched high purity aluminum foil is often used a san anode in the electrolytic capacitor. The aluminum oxide film has pronounced effects on the etching process of aluminum foil. A low speed linear sweep voltammetry (LSV) was sued to investigate the oxide film formation of high purity aluminum foil in the boric acid solution. It is generally accepted that the formation rate of oxide film on the aluminum foil is proportional to its electrical charge applied. In this work, the oxide film formation and dissolution mechanism have been explained. The electrical charge obtained in the forward direction of this voltammetry is considered as the combined result of the building up of barrier layer, and a porous oxide film. On the other hand, the backward direction is only associated with the depletion of the previously formed oxide layer. Under this consideration, the “net” electrical charge can be obtained by measuring the differences in electrical charge between the forward and the backward direction. Such an electrical quantity is found to be dependent on the pH values of the boric acid solution. Also, different method based on the assumption that an integration value of anodization current in relation to scanning rate is proportional to surface activity state was adopted to interpret the surface energy of aluminum foil. The integration value in tears of the electrical quantity is found that it is suitable to evaluate an optimum pH value and to predict a good concentration of chloride ion for the etching and cleaning process in the fabrication of aluminum foil. |
本系統中英文摘要資訊取自各篇刊載內容。