Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Plural cells
Patent
1994-03-21
1996-04-16
Willis, Jr., Prince
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Plural cells
429158, 429161, 420569, H01M 228
Patent
active
055081258
ABSTRACT:
A cast strap for a lead-acid battery is made of a lead-based alloy consisting essentially of from about 2.5 to 3.5 wt. % antimony, about 0.01 to 0.5 wt. % arsenic, about 0.01 to 0.5 wt. % tin, about 0.008 to 0.1 wt. % selenium, and the balance lead. The content of at least one of arsenic, tin and selenium is within the following ranges: about 0.075 to 0.5 wt. % tin, about 0.1 to 0.5 wt. % arsenic, and 0.021 to 0.03 wt. % selenium. For lead-based alloys containing antimony, arsenic, tin and selenium, increased additions of antimony, arsenic, and selenium generally have a favorable effect on long term corrosion resistance of battery straps in a lead-acid battery environment, whereas tin has an unfavorable effect such that increased amounts of tin dramatically lower high temperature corrosion resistance. The unfavorable effects of tin on corrosion resistance are moderated by adjustment of the levels of the other three elements, particularly arsenic, which can provide a predictable level of increase in corrosion resistance for a given arsenic content. A family of alloys highly suitable for use as cast-on battery straps and intercell connectors has been developed based upon these relationships.
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The Battery Man, Sep. 1989, article entitled "New Developments in Battery Strap Alloys," by R. David Prengaman.
Bantz Paul E.
Gryczkowski Randall T.
Globe-Union Inc.
Nuzzolillo M.
Willis Jr. Prince
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