| 摘要 |
1299102 Electroless electrolytic plating of plastics FARBENFABRIKEN BAYER A G 26 Feb 1970 [28 Feb 1969] 9232/70 Headings C7F and C7B A non-conductive substrate, e.g. an A. B. S. graft polymer is coated with nickel-boron by cleaning and pickling in e.g. chromo-sulphuric acid, dipping in an acid palladium chloride solution at a temperature of 15 to 60‹ C., a solution of a reducing agent at 15 to 40‹ C. and finally in an electroless nickel plating solution. The pH of the palladium chloride solution is 0À5 to 2À7 and the acid is sulphuric, hydrochloric, phosphoric, hydrofluoroboric or acetic. The reducing agent may be a boron hydride compound or diethylamine borane. The Ni may be subsequently electro-plated with layers of Cu, semibright and bright Ni and finally Cr. The electroless Ni and the Cu may be descaled in H 2 SO 4 . |
