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An Insight On The Application Process Of Electroless Nickel Coating MI

By Virginia Jackson


Unlike electroplating, electroless nickel coating does not use external electrical power to deposit a layer of this element on other metallic objects. Instead, it uses a chemical reaction that is auto-catalytic. It is done in the process of a reducing agent such as hydrated sodium hypophosphite or any other similar agent. It is a non-galvanic plating method that deposits a thick and uniform layer. This layer offers resistivity to corrosion and wears, chemical resistivity and lubricity. It is good to know more about Electroless nickel coating MI so as to provide durability for equipment.

Low phosphorus, medium phosphorus, and high phosphorus are three main classifications of this form of metal plating. They are used to offer different advantageous properties depending on the use of the metal object. For instance, high phosphorus treatments will offer great resistance to acidic places such as oil drilling while the low phosphorus treatment prevents against corrosion from alkaline environments and offers a uniform thickness. Medium phosphorus, which is most frequently used provides brightness for cosmetic purposes as well as causes faster deposition of the element.

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.

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.

This process has many applications and it is mostly used in engineering to coat metal elements used so as to increase resistance to wear and tear as well as to prevent corrosion. The areas where this process is applied include the making of oilfield valves, kitchen utensils, drive shafts, electrical tools and office equipment.

Its use in the automotive industry is used to protect vehicles from wear and corrosion. There should be compliance to the process types that are approved which requires that the process used is free from heavy metal stabilizers. It also uses the coating of hard discs.

There are many advantages that come with using this process. It does not use electric power thus saving on energy costs. The coat achieved is also uniform and thick. It also offers bright or semi-bright finishing on the product making it a decorative element. However, the chemicals used need to be continually replenished and the cost of treating waste is high.

The use of this process in many industries has improved the general functioning of the industrial products manufactured. It has allowed industries to venture into fields that were initially difficult due to corrosion and wearing of metals used. With this process, performance and durability of materials are improved.




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