| 摘要 |
electrolytic processes. SUBSTANCE: electrolyte for depositing bright copper coatings on steel without intermediate sublayer contains 100-120 g copper sulfate, 220-240 g ammonium sulfate, 80-100 ml 25% aqueous ammonia solution, 1-3 mmol acetylurea, 0.5-2 mmol morpholine or piperidine derivative, and water to 1 l. EFFECT: increased brightness of coating and adhesion at higher yield with regard to current. 2 ex
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