C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 11/06 (2006.01) H01M 4/62 (2006.01) H01M 4/68 (2006.01) H01M 4/73 (2006.01) H01M 4/82 (2006.01) H01M 10/34 (2006.01)
Patent
CA 2063615
Automotive SLI lead-acid batteries are disclosed which are characterized by enhanced resistance to positive grid corrosion, even when exposed to the current, relatively high under-the-hood service temperatures in use with recent model automobiles. The grids are formed from either a cast lead-based alloy including from about 0.025 to 0.06% calcium, from about 0.3 to 0.7% tin and from about 0.015 to 0.045% silver, the percentages being based upon the weight of the alloy prior to casting or a wrought lead-based alloy including from about 0.02 to 0.05% calcium, from about 0.3 to 0.5% tin and 0.02 to 0.045% silver, the percentages being based upon the weight of the alloy. Aluminum in an amount of from about 0.008 to about 0.012%, based upon the as-added total weight of the alloy may be used to maintain the desired calcium content during casting.
Cassan Maclean
Gnb Incorporated
Gnb Technologies Inc.
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