Alloys or metallic compositions – Zinc base – Aluminum containing
Patent
1982-03-23
1984-03-27
Hearn, Brian E.
Alloys or metallic compositions
Zinc base
Aluminum containing
420513, 420514, 420524, 427433, C22C 1800
Patent
active
044393970
ABSTRACT:
Process for adjusting the composition of a zinc alloy for the galvanization of steels, the alloy having a composition including the following components expressed in ppm (by weight): lead: 1,000 to 15,000, and as additives aluminium: 100 to 5,000, tin: 300 to 20,000, and magnesium: 10 to 1,000 and being deficient in at least one of said additives, said process comprising adding to the zinc alloy one or more metal compositions which are soluble in molten zinc and which contain a relatively high proportion of the additive in which the alloy is deficient, the amount of the or each metal composition being sufficient to compensate the deficit of the additive. The tin composition is virtually pure tin; the magnesium composition is a ternary alloy of zinc, magnesium (5,000 to 50,000 ppm) and aluminium (10 to 500 ppm); and the aluminium composition is a binary zinc/aluminium alloy containing about 5% of aluminium.
REFERENCES:
patent: 2195566 (1940-04-01), Gifford
patent: 3164464 (1965-01-01), Heath
patent: 3320040 (1967-05-01), Roc et al.
patent: 3480465 (1969-11-01), Imabayashi et al.
patent: 4168972 (1979-09-01), Dreulle
Hearn Brian E.
Hey David A.
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