Contrasting with a traditional electroplating process that needs an electric current to pass through the solution to form plating, the ground-breaking approach of electroless nickel plating is accomplished via auto-catalytic reaction. It efficiently deposits a smooth coat of nickel-phosphorous alloy on the desired object or metal substrate, be it conductive or non-conductive (metal or plastic).
In the auto-catalytic process, it is phosphorous that performs the role of a catalyst, and similarly, the percentage of phosphorous in the alloy determines the metallurgical properties of the plated metal. The evenness of layer that electroless nickel plating creates regardless of the geometrical complexity of the object is simply unattainable when it comes to the traditional process of nickel electroplating. While this has been an extremely taxing issue for plating companies, with the introduction of auto-catalytic plating, now any kind of patchy metal surface pooled with holes, deep curbs, or sections can be layered uniformly without any glitch.
Remarkably, opposed to electroplating, the electroless nickel plating is much simple, hassle-free, and economical. Given that, it doesn’t require an electrical charge to navigate through the solution, which is the central hypothesis of metal electroplating, the whole process appears easy and accommodating to plating experts.
However, essentially, the objects that need electroless plating should be treated well before the session. The pretreatment process needs thorough cleaning of the surface with various chemicals to remove dirt, oils, and greases. Once cleaning is done, the object should be dipped into a plating solution bath containing sodium hypophosphite that reacts and encourages the metal ion’s to deposit nickel alloy on the substrate resulting in an extremely robust smooth nickel surface on the base. In order to generate composite coat which is regularly demanded in industries like aerospace, defense or automotive to protect objects from intense heat, fire or UVs a specialized nickel plating company can make it done for you through suspension procedure in the bath.
Electroless Nickel Plating – Key Benefits
Enhanced Corrosion Resistance
Electroless nickel plating generates an extremely steady barrier protective to oxidation, erosion, and corrosion, which is a must-have criterion for applications in aerospace, marine, offshore engineering, and other industries. While its phosphorous concentration acts as an extremely protective layer to corrosion and deterioration, remarkably with a change of phosphorous mix level in the alloy like low, medium and high, industries can get required defensive coating of nickel finishes. Even with absolutely pure nickel use in solution for plating, electroplating procedure cannot generate that anti-corrode property.
Smooth Coating Distribution
The unique composition of electroless nickel plating can efficiently produce absolute evenness of the substrate, no matter how rough it is. No wonder, achieving this level of metal finishing is vital for industries to ensure exactness of metal measurements especially where hard-tolerance is a concern. Equally, for plating elements with holes, buried surface, deep sections, cuttings, it’s none, but autocatalytic or electroless plating can deliver the desired coating result and satisfy your valued customers, while electroplating just falls short.
Control Coating Density
When it comes to plating density, depending on the variety of industrial applications, customers look for low to medium or high plating thickness. With superior flexibility, simply by altering the phosphorous mix amount, your plating company can brilliantly meet your client’s need of coating density. Have a look to see how it is achievable.
Low phosphorous – Get uniform thickness and protection against corrosion and tarnishing for complex applications or material configurations;
Medium phosphorous- medium phosphorus electroless nickel plating is top demanding due to its high endurance, smoothness and enhanced corrosive strength. If brightening of your substrate is important, ask for medium level density;
High phosphorous – Boasts an extremely high level of corrosion resistance ability and top choice in alkaline, salty and mining projects.
Improved Surface Hardness
In the same way, you can get highly defensive, tough, and long-lasting product coating with electroless nickel plating to meet your product needs. Surface hardness is essential especially if finished metals need adequate protection to wear, peeling, and abrasion.
Composite Coating Potential
Composite plating has been top demanding in almost all big facilities all over the world to ensure safety, security, and endurance of objects that are specially installed in extreme weather conditions. Remarkably, the potential of electroless plating has been established to create the rigid standard of requirements used by shipping, offshore, aviation, etc. Apart from providing amazing protective strength to oxidation, corrosion, waterproofing property, composite coatings are ideal to stand the extreme heat, fire, UV rays of Sun and any kind of intense condition.
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