ANODIC ALUMINIUM OXIDE FILM AND METHOD OF FORMING IT

AN ANODIC OXIDE FILM IS FORMED ON ALUMINIUM STRIP BY CONTINUOUSLY PASSING THE STRIP THROUH A PHOSPHORIC ACID ELECTROLYTE AT FROM 25?C TO 80?C, THE CONTACT TIME BETWEEN THE STRIP AND THE ELECTROLYTE BEING NOT MORE THAN 15 SECONDS DURING WHICH TIME THE STRIP IS ANODIZED AT A CURRENT DENSITY OF AT LEAS...

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Hauptverfasser:	NIGEL CLEATON DAVIES, PETER GEOFFREY SHEASBY
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT APPARATUS THEREFOR AVIATION CHEMISTRY COSMONAUTICS DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING ORREPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLYADAPTED FOR USE IN CONNECTION WITH AIRCRAFT HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFTCOMPONENTS, NOT OTHERWISE PROVIDED FOR LINING MACHINES MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE METALLURGY PERFORMING OPERATIONS PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM PRINTING PRINTING PLATES OR FOILS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS STAMPS TRANSPORTING TYPEWRITERS
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Zusammenfassung:	AN ANODIC OXIDE FILM IS FORMED ON ALUMINIUM STRIP BY CONTINUOUSLY PASSING THE STRIP THROUH A PHOSPHORIC ACID ELECTROLYTE AT FROM 25?C TO 80?C, THE CONTACT TIME BETWEEN THE STRIP AND THE ELECTROLYTE BEING NOT MORE THAN 15 SECONDS DURING WHICH TIME THE STRIP IS ANODIZED AT A CURRENT DENSITY OF AT LEAST 250 A/M2. IN THE RESULTING FILM , THE PORES ARE ENLARGED SO THAT THE EFFECTED SURFACE AREA IS INCREASED. THE FILM FORMS AN EXCELLENT SUBSTRATE FOR LACQUER, PAINT,OR ADHESIVE.