What effect is best on the surface of neodymium iron boron magnet?

Neodymium iron boron magnet due to corrosion resistance is relatively poor, so generally are required to carry out corrosion protection, then the problem, I should give the magnet plating what? What is the best effect? What is the best effect on the surface of neodymium iron boron coating, first of all we should know that the neodymium iron boron can be plated?

What are the common coating of the neodymium iron boron magnets?

Neodymium iron boron strong magnetic coating of nickel, copper, chromium, gold, black zinc, blue, white zinc, epoxy resin, etc.. Electroplating different, the magnet surface of the color will be different, save the time for a long time also have the length of.

The comparative study of the Ni, Zn, epoxy resin, coating PARYLENE-C of neodymium iron boron magnet in three kinds of solution on the magnetic properties of the impact. The results showed that in acid, alkali and salt, polymer coating on the magnetic protective effect best, epoxy resin has a relatively poor, Ni coating times, Zn coating is relatively poor.

Zinc: seem on the surface to be silver white, do 12 - 48 hours salt spray, to use some glue adhesive, (AB) such as electroplating can be stored for two to five years.

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Nickel: seemingly stainless steel color, set to stay in the air surface is difficult to be oxidized, and the appearance of good-looking, good gloss, plating can be over 12 - 72 hours salt spray test. The disadvantage is that it can not be used for bonding with some glue, which will cause the coating to fall off. Accelerate oxidation, now on the market for nickel - Copper - nickel plating on the way to do 120 - 200 hours salt fog

Copper: more than a few people appear in the hardware industry, the use of the industry, and its appearance is yellow.

Chromium: chromium electroplating industry is relatively rare, the cost is very high, the Ordinary Company can not accept. But its ability to rot is very strong, it is difficult to react with other substances. Mainly used in the strong acidity of the place. Rarely choose this,

Black zinc: according to the customer request the product surface is treated as a black, in electroplating process is mainly in the basis of galvanized by chemical treatment with a layer of black protective film, this film can also be to protection products do use, salt fog time growth, prolonged oxidation time. But its surface is easy to be scratched, lose its protective effect. Now used in a few people, mostly replaced by resin. Here we have a note.

Kim: Yellow Gold jewelry we see most Shangjie some stalls for gold or copper. Gold makes the product looks like gold is very beautiful, generally used for the decoration industry, our products can also be used in gold plating, used for magnetic jewelry.

Epoxy resin is: after the nickel plated product again on the outside with a layer of resin paint, the industry in recent years is the market, its development speed is very fast, now all kinds of electroplating products for many people, its biggest advantage is can do the color you want.

PS: should be based on the use of the environment to select the appropriate coating. Not manufacturers coating is not the same, which the length of the main reason is that chamfer and electroplating time, don't know in the electro magnets, we should how to judge the quality of the coating quality, in fact, there is a most simple and quick way is to see the coating, the coating is bright said, the better the quality, so in the choice of ordering of the magnet, try to choose in the industry is well-known enterprises in order to ensure the coating quality.