Nickel plating is the process of applying a fine coating of nickel to a metal object to improve wear resistance and appearance. There are two primary ways to perform this technique: electroless nickel plating and nickel electroplating, also known as electrolytic nickel plating. While both accomplish the same goal of affixing a layer of nickel, the methods involved are markedly different. Learn more about these differences below.

Electroless Nickel Plating

With this approach, a nickel alloy is deposited by a controlled chemical reaction. A positively charged chemical reducing agent, which usually contains phosphorous, is built into the plating bath, so there is no need for a current to supply electricity to the plate. 

The reducing agent offers a continual buildup of deposit. The substrate naturally draws the positively charged nickel ions onto its surface, resulting in a thin layer of coating. There are several benefits to the electroless technique. The nickel and phosphorous alloys enhance the corrosion resistance of the metal object. 

The application process is immersive, which leaves you with a more uniform and comprehensive coating, and it does not require constant filtration to keep debris from the surface. Because you can choose the amount of phosphorous in the alloy, there is flexibility with the density of the coating; the lower the amount of phosphorous, the denser the coating.

Nickel Electroplating

With electroplating, a nickel alloy is also deposited from a controlled chemical reaction, but this is generated by an electrical current rather than a chemical agent. A direct current from a rectifier, battery, or another power supply travels through a conductive wire and triggers a chemical chain reaction that coats the substrate with a fine layer of nickel.

Objects plated in this way also have improved resistance to wear and corrosion. But, while electroless plating is superior in this regard, it doesn't offer the bright, shiny appearance of electroplated surfaces; as a result, many people choose electroless techniques for functional objects and electroplating for decorative or aesthetic ones.

To experience the benefits of electroless nickel plating, contact LWG Finishing. Since 1994, this Fairfield, OH-based team of chrome plating experts has been serving customers throughout the Midwest. They provide electroless plating, hydraulic rod repairs, and hard coat anodizing services. Call (513) 860-1156 or visit them online to request an estimate.