Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Forming nonmetal coating
Patent
2000-01-21
2000-12-19
Gorgos, Kathryn
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Forming nonmetal coating
205322, 205332, C25D 1126
Patent
active
061623458
ABSTRACT:
Electrolytes containing water, at least one organic solvent, and at least one alkali metal phosphate salt can be used for anodizing valve metals prepared from metal powder having a surface area of least 0.35 m.sup.2 /g or 35,000 CV/g. The alkali metal phosphate salt should be relatively insoluble in the organic portion of the electrolyte, but highly soluble in a water solution of the organic solvent. The anodizing electrolytes have relatively high conductivity and are capable of being used at high anodizing currents. The anodic film produced by these electrolytes on valve metals is of substantially uniform thickness, has improved electrical parameters, and requires a shorter stabilization time at voltage.
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Kinard John T.
Melody Brian I.
Gorgos Kathryn
Kemet Electronics Corporation
Leader William T.
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