Method for analyzing organic additives in an electroplating bath

Details Method for analyzing organic additives in an electroplating bath Method for analyzing organic additives in an electroplating bath

1991-03-08

1993-06-29

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Involving measuring, analyzing, or testing

2041531, 427 10, G01N 27416, C25D 2114

Patent

active

052231186

ABSTRACT:
A direct method of analyzing brighteners and levelers used in metal electroplating baths. The method is based on the differential adsorption of these additives on a working electrode during a sequence of steps prior to and during metal plating. The sensitivity of the method allows for the determination of both brightener and leveler in the same sample without cyclic processing.

REFERENCES:
patent: 3925168 (1975-12-01), Costas
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patent: 4146437 (1979-03-01), O'Keefe
patent: 4324621 (1982-04-01), Kerby
patent: 4443301 (1984-04-01), Kerby
patent: 4631116 (1986-12-01), Ludwig
patent: 4725339 (1988-02-01), Bindra
patent: 4897165 (1990-01-01), Bernards et al.
patent: 4917774 (1990-04-01), Fisher
Tench et al., Pulse Voltommetric Stripping Analysis of Acid Copper Plating Baths, J. Electrochem, Soc., Apr. 1985, pp. 831-834.

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