The Effect of Hydrochloric Acid Concentration and Solution Temperature on the Characteristics of Al Foil during AC Etching under Potential Control.

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  • 電位制御によるアルミニウム箔の交流エッチングに及ぼす塩酸濃度と溶液温度の影響
  • デンイ セイギョ ニ ヨル アルミニウム ハク ノ コウリュウ エッチング ニ

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Aluminum foil of 99.99% purity was etched in an aqueous solution of hydrochloric acid, sulfuric acid and aluminum chloride by a 5-Hz AC signal at controlled anodic potential and cathodic potential. The effect of hydrochloric acid concentration and solution temperature on the characteristics of AC-etched aluminum foil were investigated.<br>At a given cathodic potential, the anodic potential above which AC etching takes place and the anodic potential that gives the highest capacity, both shift toward the negative value, as hydrochloric acid concentration and solution temperature increase.<br>At a given anodic potential, the cathodic potential that results in optimum etching, shifts toward the positive value, while the cathodic potential that gives the highest capacity, shifts toward the negative value as hydrochloric acid concentration and solution temperature increase.

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