Sintered Nd-Fe-B magnet, depending on models, can stand 80-200℃ temperature, it is characterized by high magnetic remanence, high coercive force and high magnetic energy product, and it has been the strongest permanent magnet that is researched and developed successfully since 1980s.
Sintered Nd-Fe-B magnet obtains its name because it needs to be sintered in high temperature vacuum furnace. Its shape and size are accomplished with various machines. As the mechanic processing performance of this magnet is bad, so it is very simple in shape, including disk, square and C-shape or other irregular shapes.
It is easy to be rusted. The method of prevent rust is to have protective surface treatment, including galvanization, nickel plated and electrophoresis, and also, phosphatizing treatment can be used to delay oxide and rust. The corrosion endurance of every plating is different. In application, it is necessary to consider completely the actual application environment and period and choose the fittest treatment method accordingly.
Sintered Nd-Fe-B magnet is rigid, frangible and easy to be corroded. Mutual attraction between magnets due to magnetic force or adherence to different magnets suddenly shall be avoided, because this may destroy the completeness of the magnet and thus cause damages or breaches.
Manufacturing process:
Magnetic properties parameters of Sintered Nd-Fe-B Magnets：
Other properties of Sintered Nd-Fe-B Magnets
Other physical properties of Sintered Nd-Fe-B Magnets (For reference)
Surface treatment of Sintered Nd-Fe-B Magnets: In order to increase the corrosion resistance of the garments and to meet the designated surface demands, we can provide magnets with the following coating layers： Nickel-coating、 Zinc-coating、Passivation 、Epoxy-coating、Aluminum-coating
Coating Layer: Nickel-coating Merits: Excellent corrosion protection; Superior resistance against humidity and heat
Coating Layer; Zinc-coating Merits: Good corrosion protection; Good salt spray resistance
Coating Layer : Passivation Merits : Surface clean ; Certain protection for uncoated magnets.
Coating Layer : Epoxy-coating Merits : Excellent corrosion protection ; Superior salt spray resistance ; Good resistance against humidity and heat
Coating Layer : Aluminum-coating Merits : Excellent corrosion protection ; Good resistance against humidity and heat ; Good adhesive affinity
