Electrobrightening of aluminium and aluminium-base alloys

Electrobrightening of aluminium and aluminium-base alloys

A direct current electrobrightening process for aluminium and aluminium base alloy components capable of producing specular reflectivity values in excess of 80% in alloys down to 99.5% purity by maintaining the electrolyte with a pH of 9 to 10.7, as at a temperature of 70 DEG C., and dispersing loca...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: HARRIS, PETER G
Format: Patent
Sprache:eng
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS
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Beschreibung
Zusammenfassung:A direct current electrobrightening process for aluminium and aluminium base alloy components capable of producing specular reflectivity values in excess of 80% in alloys down to 99.5% purity by maintaining the electrolyte with a pH of 9 to 10.7, as at a temperature of 70 DEG C., and dispersing local products of reaction and depleted solution from the components at a rate that enables the current density to increase automatically by a factor of 2 to 4.