Production of aluminum foil capacitor electrodes
AssigneeSprague Electric Company
InventorsTrung H. Nguyen, Clinton E. Hutchins
Life of this patent
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Abstract
In the production of low voltage aluminum foil capacitor electrodes, etched and clean foil is subjected to a thermal treatment at about 595.degree. to 650.degree. C. and then anodized in an adipate formation electrolyte. The electrolyte may contain a minor amount of a phosphate salt, or the final reanodization may be carried out in a phosphate electrolyte.
Claims7
In the manufacture of low-voltage aluminum foil electrolytic capacitor electrodes including etching said foil, cleaning it, and anodizing said foil, the improvement comprising thermal treating said cleaned foil at about 595.degree. to 650.degree. C. and then anodizing said treated foil in an adipate formation electrolyte.
Dependencies are inferred from the claim text.