Zinc and Nickel Coating Magnet in Hardness, Life and Price The most commonly used coatings for NdFeB magnets are galvanized and nickel-plated. They have obvious differences in appearance, corrosion resistance, service life, price, etc. The following are the key points. Polishing difference: Nickel plating is superior to galvanizing in polishing, and the appearance is brighter. [...]
The New Technology PVD of Our Magnets, Physical vapour deposition (PVD) Grain boundary diffusion process (Dysprosium, Terbium) Key word: High HCJ & High (BH)max & High thermal stability Current situation: Comprehensive properties limited. N50H, N48SH, N45UH, N35EH. High HCJ & (BH) max unavailable or not common in the market, such as N50UH, N48EH, N50SH, N48UH. [...]
Available coatings for Sintered NdFeB magnet, Magnets Coating Table: Available Coatings: Su rface Coating Thickness (Microns) Color Resistance Passivation 1 Silver Grey Temporary Protection Nickel Ni+Ni 10-20 Bright Silver Excellent against Humidity Ni+Cu+Ni Zinc Zn 8-20 Bright Blue Good Against Salt Spray C-Zn Shinny Color Excellent Against Salt Spray Tin Ni+Cu+Sn 15-20 Silver Superior [...]
Magnetic Coatings Samarium Cobalt, Alnico, and Ceramic materials are corrosion resistant and do not require to be coated against corrosion. Alnico is easily plated for cosmetic qualities and Ceramics may be coated to seal the surface which will otherwise be covered by a thin film of ferrite powder. NdFeB magnets, both sintered and bonded, are [...]
Neodymium Magnet Plating & Coating Neodymium magnets are much more susceptible to corrosion than Ceramic, Samarium Cobalt and Alnico, and would need to be coated and protected, particularly in harsh settings. They can be easily oxidized if exposed to air and moisture in atmosphere, and would become structurally vulnerable leading to breakage. To prevent this, [...]
Humid Environment Magnet Coatings In high humidity atmospheric conditions, standard nickel-coated Neodymium magnets will eventually succumb to corrosion and over time will stop performing at an acceptable level. Ferrite or Samarium Cobalt magnets may be viable alternatives. Ferrites and Samarium Cobalt magnets have excellent resistance to corrosion and will largely remain unaffected by moisture and [...]
HangSeng Magnetics stocks a large selection of ferrite cores and hardware as well as custom assemblies tailored to match your requirements. We also provide our customers with a variety of value added services such as gapping, grinding, lapping and coating! Ferrite Cores and Hardware Gapping & Grinding HangSeng Magnetics can provide custom gapping [...]
