Manufacturing method of composite dielectric film-containing low-voltage formed foil
A composite dielectric film and manufacturing method technology, applied to capacitor parts, capacitor electrodes, etc., can solve problems such as long boosting time, influence of electrode foil formation, poor water resistance, etc., to achieve improved boosting time, low cost, Good water resistance
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Embodiment 1
[0018] a. First place the corroded foil in an aqueous solution of ammonium adipate with a mass ratio of 3%, and the current density at 65°C is 80mA / cm 2 Formation for 3 minutes under the condition of a voltage of 6V;
[0019] b. Take n-butyl titanate and ethylene glycol methyl ether in a volume ratio of 1:3 and mix the resulting solution at 40°C for 12 hours for chelation reaction, then add pure water to adjust the solution concentration to 0.1mol / L;
[0020] c. Add the titanium-containing sol-gel liquid into a clean stainless steel tank, immerse the primary chemical foil obtained in step b into the solution in step b, connect the stainless steel tank to the positive pole of the DC power supply, and connect the foil to the negative pole. When the voltage is 6V, the current density is controlled at 50mA / cm 2 Turn on the power for 0.5 minutes, take it out and dry it, put it into the air at 400℃ for heat treatment for 2 minutes, and form a titanium oxide film on the surface of t...
Embodiment 2
[0024] a. First place the corroded foil in an aqueous solution of ammonium adipate with a mass ratio of 9%, and the current density at 72°C is 80mA / cm 2 Formation for 4 minutes under the condition of voltage of 6V;
[0025] b. Take n-butyl titanate and ethylene glycol methyl ether at a volume ratio of 1:4 and mix the resulting solution at 60°C for 18 hours for chelation reaction, then add pure water to adjust the solution concentration to 0.5mol / L;
[0026] c. Add the titanium-containing sol-gel liquid into a clean stainless steel tank, and immerse the primary chemical foil obtained in step b into the solution in step b. The stainless steel tank is connected to the positive pole of the DC power supply, and the foil is connected to the negative pole. The voltage is controlled at 6V Current density 50mA / cm 2 Turn on the power for 45 seconds, take it out and dry it, and put it directly into the air at 500 ° C for 3 minutes for heat treatment to form a titanium oxide film on the ...
Embodiment 3
[0030] a. First place the corroded foil in an aqueous solution of ammonium adipate with a mass ratio of 15%, and the current density at 70°C is 80mA / cm 2 Formation for 5 minutes under the condition of voltage of 6V;
[0031] b. Take n-butyl titanate and ethylene glycol methyl ether in a volume ratio of 1:5 and mix the resulting solution at 80°C for 24 hours for chelation reaction, then add pure water to adjust the solution concentration to 1mol / L;
[0032] c. Add the titanium-containing sol-gel liquid into a clean stainless steel tank, immerse the primary chemical foil obtained in step b into the solution in step b, connect the stainless steel tank to the positive pole of the DC power supply, and connect the foil to the negative pole. When the voltage is 6V, the current density is controlled at 50mA / cm 2 Turn on the power for 1 minute, take it out and dry it, and put it directly into the air at 550 ° C for 5 minutes for heat treatment to form a titanium oxide film on the surf...
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