BLACK ELECTROPLATING BATH

PURPOSE:To obtain the titled bath giving a film having superior corrosion and tarnish resistances by adding modified hydroxyalkylamine and amino acid to Ni, Co or Fe salt, stannous salt and gluconate as principal components. CONSTITUTION:A black electroplating bath is obtd. by adding a product produ...

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Bibliographische Detailangaben
Hauptverfasser:	KOSHIURA TSUTOMU, SAKATA TAKASHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled bath giving a film having superior corrosion and tarnish resistances by adding modified hydroxyalkylamine and amino acid to Ni, Co or Fe salt, stannous salt and gluconate as principal components. CONSTITUTION:A black electroplating bath is obtd. by adding a product produced by reacting hydroxyalkylamine with epihalohydrin or dihalohydrin and amino acid to one or more kinds of salts selected among Ni, Co and Fe salts, stannous salt and alkali metallic gluconate or glucoheptoate as principal components. When the bath is used, black lustrous alloy plating having superior corrosion and tarnish resistances is formed by electrolysis with relatively small electric current without causing environmental pollution or water pollution by the treatment of waste water.