Sn-Co Alloy Salt C Decorative coating Nickel Free Plating Chemicals
1. Properties
1. Elegant decorative “Gun-color” (Black pearl) deposit can be obtained on bright deposit.
2. The deposit has strong hardness and wearability, the technique is very stable, suitable for both rack-plating and barrel-plating.
2. Bath Composition and Operating Condition
Potassium Pyrophosphate | 150~200g/L |
Salt C Bath initiator | 50~60ml/L |
Salt C Replenishing agent | 14-20g/L |
Salt C brightener | 30~40ml/L |
Temp. | 35~45℃ |
PH | 8.5~9.5 |
Anode | Tin plate |
Dk | 0.2~1A/dm2 |
Cathode moving | required |