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| 配方类型： |
METALS |
| 配方说明： |
Black Nickel Plating |
| 配方组成： |
Ammonium Sulfate/15
Zinc Sulfate 7H2O/25
Water/To make 100
ph/4.5-5.5
Pot. Sulfocyanate/32
Nickel Sulfate 7H2O/50
Current density/0.1-0.15 amp/sq dm at 20'C. |
| 配制方法： |
After plating treat with potassium dichromate (5% solution) at 60'C for 30 minutes. |
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