الثلاثاء، 23 يناير 2018

Get To Know More About Application Of 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 done through an autocatalytic chemical reaction that ensures the continuation of the process since the product made still serves as a catalyst. The tool to be plate is immersed in an aqueous solution of dissolved nickel salt and a reducing agent such as sodium hypophosphite. This will cause a reaction that will deposit the element around the tool. The element deposited still catalyzes the reaction. There are no extra equipment or electrical power required.

Before this process is carried out, the tool to be plated must be thoroughly cleaned using different chemicals. This is done in a process called the pretreatment process. If it is not done, the plating process may be ineffective and result in poor plating. After pretreatment, the material is rinsed using water which removes the chemicals used in case they have adhered to the surface.

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.

Furthermore, it is applied in the automotive industry. However, there is a certain requirement that needs to be met. They types used should be free from heavy metal stabilizers. The hard disk drives are also protected from damaging the internal magnetic layer form any damage. It also provides an atomically smooth 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:



ليست هناك تعليقات:

إرسال تعليق