钕铁硼磁钢

性能

具有极高的磁能积和矫顽力,被称为“磁王”,使仪器仪表、电声电机、磁选等设备实现小型化、轻量化、轻薄化。

性价比

相比于钐钴,钕铁硼具有较高的性价比。

钕铁硼磁钢

    钕铁硼作为稀土永磁材料的一种具有极高的磁能积和矫顽力,同时高能量密度的优点使钕铁硼永磁材料在现代工业和电子技术中获得了广泛应用,从而使仪器仪表、电声电机、磁选磁化等设备的小型化、轻量化、薄型化成为可能。钕铁硼的优点是性价比高,具良好的机械特性;不足之处在于工作温度低,温度特性差,且易于粉化腐蚀,必须通过调整其化学成分和采取表面处理方法使之得以改进,才能达到实际应用的要求

应用领域

广泛应用于新能源汽车,风力发电,工业电机,消费电子,医疗器械等领域。

良好的机械特性

良好的机械性能,容易加工成环形、圆形、方型、瓦型以及各种异形的次材产品。

钕铁硼性能表

牌号
Grade
剩磁
(Br)Remanence
内禀矫顽力(Hcj)
Intrinic
Coercivity
矫顽力
(Hcb)
Coercivity
最大磁能积
(BH)max
Max Energy Product
密度
Density
最大工作温度
Max Working
Temperature
T kGskA/mkOekA/mkOe kJ/m3 MGOeg/cm3
Max Min Max Min Min Min Min Min Max Min Max Min Min



N
N561.511.4715.114.78761183610.545441457527.580
N541.491.4514.914.59551283610.543740655517.580
N521.461.4214.614.29551283610.542239053497.580
N501.441.3914.413.99551286010.840637451477.580
N481.431.3714.313.79551286010.839035849457.580
N451.371.3213.713.29551286010.836634246437.580
N421.321.2813.212.89551286010.834231843407.580
N401.281.2512.812.59551286010.832630241387.580
N381.251.2212.512.39551286010.831028739367.580
N351.221.1712.211.79551286010.828726336337.580
N331.171.1311.711.39551283610.527124734317.580
N301.131.0811.310.8955127961024722331287.580



M
56M1.51.461514.610351499512.544640656517.5100
54M1.491.4414.914.411141410351343839855507.5100
52M1.461.4214.614.211141410351342238253497.5100
50M1.441.3914.413.911141410351340637451477.5100
48M1.421.3714.213.7111414102712.939035849457.5100
45M1.371.3213.713.211141499512.536634246437.5100
42M1.321.2813.212.81114149551234231843407.5100
40M1.281.2512.812.511141492311.632630241387.5100
38M1.251.2212.512.311141489911.331028739367.5100
35M1.221.1712.211.711141486810.928726336337.5100
33M1.171.1311.711.311141483610.527124734317.5100
30M1.131.0811.310.811141147961024722331287.5100



H
54H1.491.4414.914.4135317107513.543839855507.5120
52H1.461.4214.614.2135317105913.342238253487.5120
50H1.441.3914.413.9135317104313.140637451477.5120
48H1.421.3614.213.6135317102712.939035849457.5120
45H1.371.3213.713.213531799512.536634246437.5120
42H1.321.2813.212.81353179551234231843407.5120
40H1.281.2512.812.513531792311.632630241387.5120
38H1.251.2212.512.313531789911.331028739367.5120
35H1.221.1712.211.713531786810.928726336337.5120
33H1.171.1311.711.313531783610.527124734317.5120
30H1.131.0811.310.81353177961024722331287.5120

SH
54SH1.491.4414.914.4159220107513.543839855507.5150
52SH1.461.4214.614.2159220105913.342239053497.5150
50SH1.421.3914.213.9159220104313.140637451477.5150
48SH1.41.361413.615922010351339035849457.5150
45SH1.371.3213.713.215922099512.536634246437.5150
42SH1.321.2813.212.81592209551234231843407.5150
40SH1.281.2512.812.515922093911.832630241387.5150
38SH1.251.2212.512.215922090711.431028739367.5150
35SH1.221.1712.211.71592208761128726336337.5150
33SH1.171.1311.711.315922084410.627124734317.5150
30SH1.131.0811.310.815922080410.124722331287.5150
UH48UH1.41.361413.6191024103112.939035849457.55180
45UH1.361.3213.613.2199025100312.636634246437.55180
42UH1.321.2813.212.819902597112.234231843407.55180
40UH1.281.2512.812.519902592311.632630241387.55180
38UH1.251.2212.512.219902590711.431028739367.55180
35UH1.221.1712.211.719902586010.828726336337.55180
33UH1.171.1311.711.319902585210.727124734317.55180
30UH1.131.0811.310.819902581210.224722331287.55180
EH45EH1.361.3213.613.2230829100312.636634246437.6200
42EH1.321.2813.212.823883097012.234231843407.6200
40EH1.281.2512.812.523883094711.932630241387.6200
38EH1.251.2212.512.223883091511.531028739367.6200
35EH1.221.1712.211.723883088411.128726336337.6200
33EH1.171.1311.711.323883086010.827124734317.6200
30EH1.131.0811.310.823883082010.324722331287.6200
AH40AH1.281.2512.812.527063494711.932630241387.6230
38AH1.251.2212.512.227863591511.531028739367.6230
35AH1.21.171211.727863588311.128726336337.6230
33AH1.171.1111.711.127863584410.627123934317.6230
30AH1.131.0711.310.727863581210.224721531277.6230
28AH1.091.0210.910.22786357729.723119929257.6230
TH35TH1.221.1712.211.731023986710.928726336337.6250
33TH1.171.1111.711.131824085110.727123934317.6250
30TH1.131.0811.310.831824082010.324722331287.6250

烧结钕铁硼物理性能

烧结钕铁硼物理性能
Physical Properties of Sintered NdFeB
Br可逆温度系数 Reversible Temp coeff. Of Br-0.09~-0.11%/℃
Hcj可逆温度系数 Reversible Temp coeff. Of Hcj-0.45~-0.75%/℃
密度 Density 7.4~7.7g/cm³
维氏硬度 Vickers Hardness500~600HV
抗压强度 Compressive Strength1000~1500MPa
比热 Specific Heat0.12Kcal(Kg.℃)
杨氏模量 Young Modulus150~200GPa
泊松比 Poisson’s Ratio0.24
居里温度 Curie Temperature310~350℃
电阻率 Electrical Resistivity1.4~1.6μΩ·m
抗拉强度 Tensile Strength80~90MPa
热膨胀系数 Coefficient of Thermal Expansion(1-4)×10-6℃
热传导率 Pyroconductivity8~10W/(m.K)
刚度 Stiffness0.64N/m²
压缩率 Compression Ratio9.8*10-12m2/N
相对磁导率 Relative Permeability 1.02~1.06
注:参考标准:GB/T 13560-2009

制造流程

技术能力

mcemagnet grain boundary diffusion 2
mcemagnet grain boundary diffusion

晶界扩散介绍

钕铁硼永磁在新能源、信息通讯和智能制造等领域有着广泛的应用。电动汽车驱动电机、风电系统发电机等对钕铁硼磁体的高温性能和矫顽力提出了更高的要求。重稀土Tb和Dy可以显著提高钕铁硼磁体的各向异性场,但降低了剩磁,增加了成本。21世纪初出现的晶界扩散技术是稀土永磁制造领域的一项重大进展。它通过将重稀土元素或稀土合金以晶界扩散的方式渗透入磁体,在有效提高磁体矫顽力的同时,大幅降低重稀土含量,提高性价比。

晶界扩散优势

晶界扩散技术可减少重稀土用量,有效节约重稀土资源;降低磁体生产成本,提高产品的综合性价比。 针对同样性能的磁体,晶界扩散工艺技术比传统工艺技术的重稀土使用量更少与传统工艺相比,晶界扩散工艺能制备出更高综合性能的磁体,如52SH、52UH、45EH、42AH,38TH(VH);其中部分磁体的Hcj(kOe)+(BH)max(MGOe)>82

mcemagnet neodymium magnet grade table

退磁曲线

mcemagnet Ndfeb magnet N48H magnetic curve
mcemagnet Ndfeb magnet N45SH magnetic curve

镀层介绍

mcemagnet neodymium magnet zinc plating

镀锌

mcemagnet nickel plating

镀镍

mcemagnet epoxy plating

环氧

mcemagnet neodymium magnet gold plating

镀金

表面处理镀层代号颜色镀层厚度中性盐雾试验湿热试验高压加速老化试验使用温度
蓝白锌Zn.L蓝白色4-15μm≥24h//≤160℃
彩锌Zn.C多彩色4-15μm≥48h//≤160℃
镍铜镍(滚镀)NiCuNi银色5-20μm≥48h500h48h≤200℃
镍铜镍(挂镀)NiCuNi银色5-20μm≥24h500h48h≤200℃
镍铜镍+锡NiCuNi+Sn银白色5-20μm≥72h500h96h≤200℃
镍+锡Ni+Sn银白色5-20μm≥72h500h96h≤200℃
镍+银Ni+Ag银色5-20μm≥72h72h96h≤160℃
镍+金Ni+Au金黄色5-20μm≥72h500h96h≤200℃
镍+化学镍(挂镀)Ni+Ap.Ni银色3-20μm≥24h500h48h≤200℃
镍+化学镍(滚镀)Ni+Ap.Ni银色3-20μm≥72h500h48h≤200℃
环氧Epoxy黑色/灰色10-30μm≥72h72h200h≤160℃
镍铜+环氧NiCu+Epoxy黑色/灰色20-40μm≥500h500h200h≤160℃
PVD.Al银白色2-15μm≥100h500h200h≤400℃
铝+环氧PVD.Al+Epoxy黑色/灰色15-30μm≥200h500h200h≤160℃
派瑞林Parylene无色透明20-50≥220h500h48h≤120℃