| 摘要 |
<p>. In accordance with certain of its aspects this invention relates to a process and composition for the preparation of an electrodeposit which contains iron and at least one metal selected from the group consisting of nickel and cobalt which comprises passing current from an anode to a cathode through an aqueous acidic electroplating solution containing iron of which a maximum of about 5 g/l is ferric ion and at least one member selected from the group consisting of nickel compounds and cobalt compounds providing nickel, cobalt and iron ions for electrodepositing nickel-iron alloys, cobalt-iron alloys or nickel-iron-cobalt alloys, the improvement comprising the presence of from about 1 to 100 g/l of at least one complexing compound consisting of a poly-substituted aryl compound containing at least one carboxylic acid group defined as -COOH, another substituent independently selected from hydroxy and carboxy, and one or more substituents independently selected from sulfo (defined as -SO3H) and sulfoalkyl groups.</p> |
