Deep corrosion method of electrode aluminum foil for flash lamp
A flash lamp and electrode technology, applied in the direction of circuits, capacitors, electrical components, etc., can solve the problems of inability to carry out deep corrosion, perforation corrosion, high leakage current, etc., to reduce primary corrosion current, reduce primary acidity, reduce loss and leakage current Effect
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Embodiment 1
[0029] Soak the aluminum foil in the pretreatment solution for 60 seconds, clean it and place it in a primary corrosion mixture containing 2.0wt% hydrochloric acid, 25wt% sulfuric acid and 0.5wt% aluminum ions at a temperature of 80°C, and apply a current density of 550mA / cm 2 Conduct electrolytic corrosion with direct current for 210 seconds, clean it with pure water and put it into the secondary corrosion solution containing 4wt% hydrochloric acid, 0.5wt% aluminum ion and 0.1g / L corrosion inhibitor at 85°C and pass through it with 50mA / cm 2 The electric current is treated for 900 seconds, and then the foil sample is cleaned and soaked in the post-treatment solution for 30 seconds, then dried, and the capacity is tested at 361Vf.
Embodiment 2
[0031] Soak the aluminum foil in the pretreatment solution for 120 seconds, clean it and place it in a primary corrosion mixture containing 6wt% hydrochloric acid, 30wt% sulfuric acid and 2wt% aluminum ions at a temperature of 73°C, and apply a current density of 450mA / cm 2 Electrolytic corrosion for 180 seconds with direct current, cleaned with pure water and then placed in a secondary corrosion solution containing 5.5wt% hydrochloric acid, 3wt% aluminum ions and 0.3g / L corrosion inhibitor at 82°C with a flow rate of 75mA / cm 2 The current treatment is 720 seconds, and then the foil sample is cleaned and soaked in the post-treatment solution for 60 seconds, then dried, and the capacity is tested at 361Vf.
Embodiment 3
[0033] Soak the aluminum foil in the pretreatment solution for 150 seconds, clean it and place it in a primary corrosion mixture containing 10wt% hydrochloric acid, 45wt% sulfuric acid and 5.5wt% aluminum ions at a temperature of 70°C, and apply a current density of 200mA / cm 2 Conduct electrolytic corrosion with direct current for 90 seconds, clean it with pure water and put it into a secondary corrosion solution containing 8wt% hydrochloric acid, 5.5wt% aluminum ions and 0.5g / L corrosion inhibitor at 75°C with a flow rate of 100mA / cm 2 The electric current is treated for 600 seconds, and then the foil sample is cleaned and soaked in the post-treatment solution for 180 seconds, then dried, and the capacity is tested at 361Vf.
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