Lead alloy battery grids by laser treatment

Details Lead alloy battery grids by laser treatment Lead alloy battery grids by laser treatment

1989-10-30

1990-12-18

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

29 2, H01M 473

Patent

active

049786016

ABSTRACT:
There is disclosed a method of laser treating lead-containing battery grids such that virtually instantaneous melting and solidfication occurs, thereby yielding an improved fine-grained microstructure even with such normally immiscible (in lead) metals as aluminum. The invention also permits a high aluminum content without the metal vaporization and oxidation, or the coarse grain structure, normally encountered. The fine grain structure of the treated product provides a battery grid having improved weight, electrical, mechanical and corrosion-resistant properties.

REFERENCES:
patent: 4689874 (1987-09-01), Nishiura
patent: 4734379 (1988-03-01), Kamiyama
patent: 4859496 (1989-08-01), Toyonaga et al.
Vesely, Jr., E. J. and Verma, S. K., "The Use of High Power Lasers in Surface Modifications" in Surface Modification Technologies II (Sudarshan, T. S. and Bhat, D. G. eds.), Proceedings of the Second International Conference on Surface Modification Technologies, Sep. 26-28, 1988, pp. 117-23.
Molian, P. A. and Hsu, M. J., "Machinability of Laser Coated High Speed Steels" in Surface Modification Technologies II (Sudarshan, T. S. and Bhat, D. G. eds.), Proceedings of the Second International Conference on Surface Modification Technologies, Sep. 26-28, 1988, pp. 155-73.

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