What is the phosphating process of ndfeb magnet?

Neodymium iron boron（NdFeB） magnet is now widely used, the rapid development of magnet products.Ndfeb from the creation to the present widespread use, also only more than 20 years of time.Because of its high magnetic function and ease of processing, the price is not very high, so the field of use is expanding rapidly.

Now, commercial ndfeb, the magnetic energy product can reach 50MGOe, 10 times that of ferrite.Ndfeb magnets are very simple to corrode.Therefore, most of the finished products to electroplate or coating.The conventional selection of surface treatment includes: nickel plating (ni-cu-ni), zinc plating, aluminum plating, electrophoresis, etc.If work is in airtight environment, also can choose the method of phosphating.When the magnet needs epoxy adhesive and coating, the adhesive force of epoxy organics such as glue and paint needs the matrix to have good wetting performance.The phosphating process can improve the wetting ability of the magnet surface.Electrophoretic coating has become one of the most widely used surface treatment techniques.Because of its good adhesion with porous magnet surface, and salt fog resistance, acid resistance, alkali resistance and corrosion resistance, corrosion resistance.However, compared with spray coating, its resistance to moisture and heat is poor.thank you for reading!

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