Making Cast Articles of Aluminum Alloy

1,195,552. Aluminium alloys. DOW CHEMICAL CO. June 7, 1967 [June 13, 1966], No. 26293/67. Heading C7A. [Also in Division B3] Aluminium alloy anodes for use as sacrificial anodes in the cathodic protection of ferrous structures operated in saline water applications are produced by heating to a temper...

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Hauptverfasser:	JOHN JOSEPH NEWPORT III, CHARLES FRANK SCHRIEBER
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BASIC ELECTRIC ELEMENTS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PERFORMING OPERATIONS POWDER METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	1,195,552. Aluminium alloys. DOW CHEMICAL CO. June 7, 1967 [June 13, 1966], No. 26293/67. Heading C7A. [Also in Division B3] Aluminium alloy anodes for use as sacrificial anodes in the cathodic protection of ferrous structures operated in saline water applications are produced by heating to a temperature of from 760‹ C. to 982‹ C. a mercury containing aluminium alloy which exhibits an oxidation potential of from 0‹9 to 1À2 volts, and maintaining the molten alloy within the temperature range while pouring the alloy into a mould. The alloy may be formed by melting aluminium and adding a mercury-zinc alloy, so as to produce an aluminium alloy having, by weight, À02-À08% mercury and À1-35% zinc. The alloy may also have up to 20% of one or more alloying components such as magnesium, calcium, manganese, copper, silver, cadmium, tin, gold, antimony, beryllium, silicon, barium, strontium, gallium, bismuth, indium and lead. The molten alloy is poured into a mould pre-heated to between 260‹ C. and 538‹ C. and, in one example, an iron mould may be coated with a mould wash of a graphite suspension in water, or coated with acetylene black from an acetylene flame.