FIELD: galvanostegy. SUBSTANCE: electrolyte for bright copper plating on steel without intermediate layer contains 90-100 g copper sulfate, 150-250 g ammonium sulfate, 15-25 g polyethylenepolyamine, 10 M 1,3-dipiperidino-2-methylbenzyl-oxypropane di(iodomethylate), 10 M N-benzylmorpholine, and water to 1 l. EFFECT: achieved high quality of coating with no underlayer and no hydrogenation of steel substrate. 3 tbl, 2 ex
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