Method and apparatus for determining throwing power of an electr

Details Method and apparatus for determining throwing power of an electr Method and apparatus for determining throwing power of an electr

1989-11-20

1990-06-12

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 451, 204434, 2041531, G01N 2700, G01N 2728

Patent

active

049325183

ABSTRACT:
A composition for electroplating copper onto a conductive surface comprising a solution soluble copper salt and an acid electrolyte, said copper salt being present in a concentration of from about 1 to 10 grams per liter of solution and said acid being present in a concentration whereby the acid to copper ratio preferably varies between about 30 to 1 and 50 to 1. The composition is especially useful for the plating of walls of cylindrical openings having a ratio of height to diameter of at least 10 to 1 and a length of at least 0.100 inches.

REFERENCES:
patent: 3121053 (1964-02-01), Hull et al.
patent: 3128371 (1964-04-01), Spaulding et al.
patent: 4102770 (1978-07-01), Moriarty et al.
patent: 4487681 (1984-12-01), Cordes
D. R. Turner, Plating and Surface Finishing, pp. 32-35, Jul. 1979.

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