Email Us neo@atechmagnet.com CALL US NOW +86-010-53345989
Huatai Xinding(Beijing)Metal Materials Co., Ltd.
En
Why Neodymium Magnets Require Plating?
Magnetic solution
provider & manufacturing expert,
25 years of professional experience
Innovative solutions for sustainable developments toward a better world
Striving for excellence and continuous improvements to support your success

Why Neodymium Magnets Require Plating?

Nearly every neodymium magnet will be plated or coated and, as the most powerful permanent magnet available, they are used in many different applications. However, they possess physical characteristics that require them to be plated or coated in order to protect them from damage. In their raw form, neodymium magnets are quite brittle, and as a result are prone to chipping, breakage, and other types of physical damage. Another concern is that neodymium magnets (which are 65% iron by weight content) are highly vulnerable to corrosion and prone to experiencing erosion and decay if not properly coated. Fortunately, there are many coating options available for neodymium magnets that protect damage and corrosion from occurring. Types of Coatings
The type of plating or coating used on a neodymium magnet is determined based on the application and environment in which the magnet will be used. One of the most common options is nickel plating, a three-layer plating that combines a nickel layer, a copper layer, and a nickel coating. Nickel options are typically best suited for indoor use, offer excellent abrasion resistance, and are a highly cost-efficient choice. Other nickel-plating options incorporate layers of copper, nickel, gold, and chrome. For those who desire non-nickel metal plating, zinc is also available.

There are various types of non-metal coatings available for neodymium magnets, including Teflon/PTFE coatings, plastic coatings, rubber coatings, and epoxy resin coatings. These coatings are often designed for use in specific applications, and some require speciality manufacturing.

One specialist coating is Everlube, which was originally developed as a brand of dry film lubricant products specifically designed to enhance and improve the performance of critical components and meet a wide variety of industry, defence, and customer specifications for critical components.  Manufactured by Curtiss Wright, the coatings are widely used by companies including Boeing, Airbus and NASA. The Everlube anti-corrosion magnet coating combats the increasingly difficult working environments for magnets and magnetic components by preventing oxidation and deterioration of high-powered permanent neodymium rare earth magnets.

When selecting the plating or coating for neodymium magnets, there are several factors to take into consideration. Reviewing the magnet application, it is important to assess:

The environment in which the magnet operates;
How well the plating or coating resists abrasion;
How the plating or coating interacts with glue;
The thickness of the plating or coating;
How well the coating protects against corrosion and wear that can be caused by environmental factors such as humidity, water, salty air, and salt water.
The price and cost efficiency of the coating;




Source:https://www.bunting-berkhamsted.com/coatings-for-neodymium-magnets/
Related News
  • Rubber Magnetic Application

    Rubber Magnetic Application

    June 10, 2019The rubber coated rare earth magnet is a new type of rubber composite material. Because it has both the magnetic properties of rigid magnets and the flexibility of rubber, it is widely used in the man...view
  • Use of Environmentally Friendly Chemicals to Recover Rare Earth Metals (2)

    Use of Environmentally Friendly Chemicals to Recover Rare Earth Metals (2)

    May 10, 2021E-waste recycling is not the complete answer.Through e-waste recycling, once the service life expires, rare earth metals can be recovered from electronic products (such as mobile phones, laptop comput...view
  • Four Effective Methods of Separating Strong Square Magnet

    Four Effective Methods of Separating Strong Square Magnet

    December 30, 2020The biggest advantage of neodymium iron boron strong magnet is its super magnetism. Even relatively small rare earth magnets are difficult to separate. How to separate strong square magnets quickly an...view
  • NdFeB Magnet and Ferrite Magnet

    NdFeB Magnet and Ferrite Magnet

    June 10, 2019With the continuous development of new industries, we know that magnets are used in many fields. But magnets are also divided into many types. The types of magnets are: sintered NdFeB, bonded NdFeB, S...view