|
|
Electroless nickel plating is also known as chemical or autocatalytic nickel plating. In contrast to the electroplating (galvanic) technique, chemical nickel plating baths work without an external current source. The plating operation is based upon the catalytic reduction of nickel ions on the surface being plated. To achieve good adhesion to the aluminium substrate, zinc immersion coating is used as a pre-treatment.
Electroless nickel has the following advantages:
- The need for complicated jig and anode arrangements is avoided
- An unique throwing power of the solution
- The coating grows at uniform speed all over the component. In many cases subsequent machining will not be required.
There are 3 main types of electroless nickel coatings:
1. nickel-phosphorus
2. nickel-boron
3. poly alloys
|
| 1.
Electroless nickel plating |
Compared to nickel plating, electroless nickel is more expensive: about 50 percent more expensive. The reason is the frequent changes of the chemical bath (every 6-7 turnovers; see additional information)
|
15-Nov-2005 Hits: 226 Rating: 3.00 Votes: 1
[Detail]
[Send URL]
|
| 2.
Caswell Inc. - Electroless Nickel Kit |
Plating - electroplating - anodizing - powder coating. Do it yourself with plating
kits from Caswell Inc. Selling chrome - nickel - cadmium - brass - gold ...
|
15-Nov-2005 Hits: 192 Rating: 0.00 Votes: 0
[Detail]
[Send URL]
|
|
|
|
