Pages

mardi 23 janvier 2018

Learn More About The Application Electroless Nickel Coating MI

By Virginia Jackson


This is one of the most common methods of electroless plating. It does not require passing an electric current through the solution given to create a deposit. It, however, uses a chemical technique referred to as auto-catalytic chemical reactions. This reaction means that the solution is catalyzed by one its products. This process produces a hardness factor, increase natural lubricity and offers resistivity to abrasion, corrosion and wear. It is, therefore, suitable to apply Electroless nickel coating MI process if you require providing a protective covering for metal tools and equipment without the use of external electricity.

There are three main categories of this plating method namely low phosphorus, medium phosphorus, and high phosphorus each having their own advantages depending on the purpose it is required to perform. The low phosphorus treatment provides high resistivity to alkaline environments and a certain degree of hardness while medium phosphorus causes deposits to be formed at a faster rate. It is the most common type applied. The high phosphorus provides high resistance to corrosion from elements that are acidic in nature.

This process is autocatalytic plating that involves a chemical reaction that uses one of the reactants products as the catalyst. It issued dissolved nickel and a reducing agent most commonly sodium hypophosphite. When the catalytic metal is dipped into the solution deposits are created around the metal immersed and the reaction continues because the deposits also act as catalysts. There are stabilizers used to regulate pH levels.

Pretreatment is a process that is carried out on a material before it is plated. It involves the cleansing of the material with various chemicals in order to remove substances that may hinder effective playing process. Rising using water must be done two or three times to remove the chemicals used. Cleaning removes any forms of scaling while degreasing eliminates oily surfaces.

For many years, this process had been in use especially in engineering and other related fields. They are mostly used to increase the strength of equipment used and increase resistance to corrosion from acidic and alkaline compounds. They are used in the manufacturing of paper handling equipment, electrical or mechanical tools, optical surfaces for diamond turning and much more.

It is also used in the automotive industry to reduce wear of vehicle parts. Furthermore, it is used in the manufacturing of hard disks drives in order to provide a coating that protects the underlying magnetic layers from damage. It can also be used to salvage worn out parts because of the high hardness of the coating.

This process is beneficial in many different ways. The metal that is plated has improved hardness due to the deposits. It does not need to use electric current and therefore saves on power. There are no complex methods that require being performed. It also produces a smooth and even coating. However, since a lot of chemicals are used and replenished, treatment of waste is costly.

Generally, this process is important as it results in improved mechanical and electrical properties and the cosmetic improvement of the tool to be plated. It is reliable and more preferred to electroplating. It improves the quality and gives superior lubrication and wear resistance.




About the Author:



Aucun commentaire:

Enregistrer un commentaire

 
Blogger Templates