NdFeB Magnet

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Sintered NdFeB Magnet
NdFeB curves characteristics
Compression Moulding Bonded NdFeB Magnet
Injection Moulding Bonded NdFeB Magnet
NdFeB Magnet description: NdFeB magnet is mainly made of Neodymium, Iron and Boron,with excellent magnetic property, abundant raw material and reasonable prices, NdFeB Magnet can be used as an ideal magnet in mini-motor, Permanent magnet instrument, electronic industry, auto industry, petro-Chemical industry, nuclear magnetic resonance, sound device magnetic suspension system,magnetic transmission machine and iatrical apparatus and etc. For NdFeB, its surface is usually treally treatd with some special methods.The surface treatment method include Zine, Nickel, Tin, Silver, Gold plating, Phosphor and Spray Epoxy Resin etc.
Surface
Type
Minimal layer thickness
Surface Color
Remarks
Passivation
<=1µ Silver grey Temperary Protection Nickel coating Ni+Ni 10-20µ Silver semibright Excellent resistance to humid atmosphere Ni+Cu+Ni Superior resistance to humid atmosphere Zinc coating Zn 8-20µ Blue whiteshining color shining Good resistance to salt spray C-Zn Excellent resistance to salt spray Tin coating Ni+Cu+Sn 15-20µ Silver semibright Superior resistance to humid atmosphere Gold coating Ni+Cu+Au 10-20µ Gold shining Superior resistance to humid atmosphere Cupper coating Ni+Cu 10-20µ Gold shining Temporary treatment Epoxy Ni+Cu+Epoxy 15-25µ Black Excellent climatic and salt spray resistance Zn+Epoxy Chemical Coating Ni 10-20 Silver semibright Excellent resistance to humid atmosphere NdFeB Physical Properties Temp.Coeff.of Br: -0.11% / •C Temp.Coeff.of iHc: -0.60% / •C Density: 7.4-7.6g/cm3 Curie Temperature: 310-340•C Vickers Hardness: 600HV Electrical Resistivity: 144 Tensile Strength: 8kg/mm2 Flexural Strength: 25kg/mm Specific Heat: 0.12kcal/(kg.•C) Coef.of Thermal Expansion: 4x10-6 Thermal conductivity: 7.7kcal/m.h.•C Young¡¯s Modulus: 1.6x1011N/m2 Rigidity: 0.64N/m2 Poisson¡¯s Ratio: 0.24 Compressibility: 9.8x10-12 m2/N Download : NdFeB Magnet,NdFeB Magnet