What chemicals are used in electroless nickel plating?
Electroless nickel plating is a chemical process which reduces nickel ions in solution to nickel metal by chemical reduction. The most common reducing agent used is sodium hypophosphite. Alternatives are sodium borohydride and dimethylamine borane but they are used much less frequently.
What are the benefits of electroless nickel plating?
Advantages of Electroless Nickel Plating
- Excellent corrosion resistance.
- Excellent wear and abrasion resistance.
- Good ductility, lubricity and electrical properties.
- High hardness, especially when heat-treated.
- Good solderability.
- Even and uniform thickness even down deep bores and recesses, and at corners and edges.
How thick can you plate electroless nickel?
approximately 0.1 mm
The maximum thickness of electroless nickel plating is limited to approximately 0.1 mm. Electroplating is the only possibile way to achieve a greater degree of thickness, which we define as “thick nickeling” or “thick nickel plating”.
What is meant by electroless plating?
Electroless plating, also known as chemical or auto-catalytic plating, is a non-galvanic plating method that involves several simultaneous reactions in an aqueous solution, which occur without the use of external electrical power. It is mainly different from electroplating by not using external electrical power.
Does electroless nickel rust?
Electroless nickel on its own has excellent corrosion resistance, and when properly applied, the coating is almost completely resistant to alkalies, salt solutions/brines, chemical or petroleum environments, and all types of hydrocarbons, solvents, amonia solutions, and acids.
How is electroless nickel plating done?
Electroless Nickel Plating (ENP) is the deposit of a nickel-alloy coating by chemical reduction – without the electric current that’s used in electroplating processes. The majority of ENP for engineering purposes is a nickel phosphorus deposit containing 2 to 14% phosphorus.
What color is electroless nickel plating?
Nickel plating is yellowish-white in color and has a hard reflective finish. It has good wear resistance, solderability, and dimensional repeatability.
How do you make electroless nickel plating?
Electroless Nickel is applied by heating the nickel bath to 195°F, and then immersing the part to be plated into the bath for 15-60 minutes, depending on the desired thickness. No rectifiers or DC power are required – an autocatalytic reaction takes place that applies the nickel coating.
What is electroless plating explain electroless plating in nickel?
What do you need to know about electroless nickel plating?
Surface Texture: Uneven metal surfaces such as burrs cannot be effectively plated.
What is the required thickness of nickel plating?
What can you tell me about electroless nickel?
Electroless nickel, also known as EN or E/Ni, provides a uniform coating on most surfaces, even complex or irregular ones. The cover it provides is hard and resistant to wear, corrosion and friction. Electroless Nickel Plating provides many advantages compared to alternative plating techniques.
What is the process of nickel plating?
Nickel electroplating. Electroplating or surface treatment involves applying a thin layer of metal or metal alloy.