Alkali metal containing battery grid lead alloy
AssigneeN L Industries, Inc.
InventorsM. Vikram Rao, George S. Foerster, Ranna K. Hebbar
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Abstract
An alkali metal containing low antimonial content lead alloy characterized by improved ductility for use as an electric storage battery grid or in acidic environments suitably contains from 0.5% to 3.0% Sb, 0.01% to 0.7% As, 0.001% to 0.7% Sn, 0.001% to 0.15% Cu, 0.001% to 0.015% S or 0.001% to 0.05% Se or admixtures thereof and 0.001% to 0.05% of an alkali metal. Battery grids made from the alloy are resistant to electrochemical corrosion, gassing, and grid growth as well as exhibiting improved bend ductility.
Claims11
A lead alloy characterized by good ductility and being resistant to corrosion in an acid environment consisting essentially of from 0.5% to 3.0% antimony, from 0.01% to 0.7% arsenic, from 0.001% to 0.7% tin, a member selected from the group consisting of from 0.001% to 0.015% sulfur, from 0.001% to 0.05% selenium, and admixtures thereof, a member selected from the group consisting of from 0.001% to 0.05% of an alkali metal and admixtures thereof, balance essentially lead.
A lead alloy characterized by good ductility consisting essentially of from 1.2% to 2.2% antimony, from 0.05% to 0.30% arsenic, from 0.05% to 0.3% tin, a member selected from the group consisting of from 0.002% to 0.01% sulfur, from 0.015% to 0.025% selenium, and admixtures thereof, a member selected from the group consisting of from 0.003% to 0.01% of an alkali metal and admixtures thereof, balance essentially lead.
Dependencies are inferred from the claim text.