Surface recrystallization of lead-alloy grid

Details Surface recrystallization of lead-alloy grid Surface recrystallization of lead-alloy grid

1998-03-04

2000-05-02

Nuzzolillo, Maria

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429233, 429245, 429234, H01M 480, H01M 474

Patent

active

060570598

ABSTRACT:
Melting and recrystallizing the surfaces of a wrought Pb--Ca--Sn alloy strip from which positive Pb-acid storage battery grids are punched or expanded. The alloy also contains an alloyant such as silver which, upon recrystallization, provides a higher concentration of alloyant-rich grain boundaries on the surface of the grid than the wrought grid for enhancing the conductivity of any oxidation layer formed on the surface of the grid during high temperature cycling of the battery.

REFERENCES:
patent: 4228580 (1980-10-01), Matter
patent: 4279977 (1981-07-01), Matter
patent: 4805277 (1989-02-01), Asuda et al.
patent: 4978601 (1990-12-01), Kim et al.
patent: 5858575 (1999-01-01), Chen

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