Ndfeb(Neodymium) strong magnet coating is the most commonly used zinc plated or nickel plated, they have a very obvious difference in appearance, corrosion resistance, service life, application, price and so on in these different coated.

Comparison of appearance between galvanized and nickel-plated neodymium magnets；

Neodymium iron boron nickel plating is usually silver white in appearance, with a certain degree of gloss, which can improve the appearance of the magnet. The color and appearance are similar to that of RMB one yuan. Currently, three layers of nickel, copper, and nickel are used, making the nickel plating more stable, durable, and able to maintain a good appearance for a long time.

Neodymium rectangular block magnet galvanized appearance color;

Neodymium disc magnet plated nickel copper nickel appearance color;

Neodymium magnet galvanized: The appearance is a bit blue-white, and the color is like the early Chinese yuan A penny. However, over time, the zinc coating may gradually oxidize, forming a faint layer of zinc oxide on the surface.

Difference of Corrosion resistance: 

Zinc is the active metal, can react with acid, so the corrosion resistance is poor.

After the nickel plating surface had treatment, its corrosion resistance is higher.

Difference of service life: 

Due to different corrosion resistance, the service life of zinc is lower than the nickel plating. It mainly manifested the surface coating is easy to fall off, leading to the oxidation of the magnet, thus affecting the magnetic properties in the use of a long time.

Difference of hardness: 

Nickel plating is higher than zinc. It can greatly avoid collision to make the Ndfeb strong magnet drop angle, fracture and other phenomena in the process of use.

Difference of price: 

Galvanizing: Galvanizing is a relatively cost-effective surface treatment method with relatively low costs.

Nickel plating: Relatively speaking, the cost of nickel plating is higher than that of zinc plating, as nickel is a more expensive metal.

The difference between galvanizing and nickel plating with neodymium magnet;

Ndfeb nickel plating is mainly used in motors, generators, medical instruments, sensors and electronic equipment, communications, optical instruments, home.

Ndfeb galvanized is used for packaging, handbags, leather goods, magnetic buckle and so on.

Based on these characteristics, consider the following:

If you focus on the corrosion resistance of magnets and the budget is limited, galvanizing may be a better option.

If you need a magnet with high levels of use and appearance requirements, and the budget allows, nickel plating may be more suitable for your needs.

To learn more about magnets with different types of coatings, click Special Coating Magnets