高温磁性材料于荣海材料科学与工程学院北京航空航天大学材料的性质1.力学性质2.物理性质2.1电学性质2.2磁学性质2.3光学性质2.4热学性质2.5超导电性性质使用性能合成/制备结构/成份材料科学四要素Maglev－吸引力和排斥力磁场的产生电子绕核转动和自旋钢铁研究总院钢铁研究总院航天家电自动化生物IT电子汽车航空通信电工应用与研究高性能磁性材料磁性材料的应用铁磁性反铁磁性亚铁磁性物质的磁性磁畴-MagneticDomain磁化过程和磁畴运动:iMM磁畴和静磁能磁畴照片磁滞回线主要参数:Hc(矫顽力);Bs(饱和磁化强度)iMM软磁材料永磁材料磁性材料的主要种类Varioussoftmagneticmaterials•Iron•Fe-Sialloys•Fe-Nialloys•Fe-Coalloys•SoftferritesMoFe2O3,[M,Zn]Fe2O4•Amorphousalloys(Fe72Co8Si5B15)•Nanocrystallinealloys(Fe73.5Cu1Nb3Si13.5B9)Varioushardmagneticmaterials•Fe&Cotsteel•NiandCoalloys(alnicos)•Oxides(Hardferrites)•Rareearthinter-metalliccompoundsExamplesofmodernpermanentmagnets•SmCo5type(sintered)•Sm2Co17type(sintered)•BondedREcobaltmagnets(bondedSmCo5,Sm2Co17)•SinteredNd-Fe-Bmagnets•BondedNd-Fe-BmagnetsADVANCEDMAGNETSADVANCEDMAGNETSADVANCEDMAGNETSADVANCEDMAGNETSMaximumenergyproduct(MGOe)19601970198019902000102030405060HadjipanayisSagawaTawaraClarkOjimaYoneyamaStrnatVelgeBuschowBenz,MartinNesbittHubbardKanekoSagawaOtsukiKanekoStrnatCroatKoon0YearsCoehoornWangManafNagelMishraMaximumenergyproduct(MGOe)19601970198019902000102030405060RaySmCo5Sm2Co17Nd2Fe14BRodewaldStrnat0YearsSennoNd2Fe14B/-Fe1stGenerationREM2ndgenerationREM3rdgenerationREMNanocompositeREMUpto100MGOe稀土永磁材料进展Wearehere!Maximumenergyproduct(MGOe)19601970198019902000102030405060HadjipanayisSagawaTawaraClarkOjimaYoneyamaStrnatVelgeBuschowBenz,MartinNesbittHubbardKanekoSagawaOtsukiKanekoStrnatCroatKoon0YearsCoehoornWangManafNagelMishraMaximumenergyproduct(MGOe)19601970198019902000102030405060RaySmCo5Sm2Co17Nd2Fe14BRodewaldStrnat0YearsSennoNd2Fe14B/-Fe1stGenerationREM2ndgenerationREM3rdgenerationREMNanocompositeREMUpto100MGOe稀土永磁材料进展Wearehere!高温永磁材料15yearsContractlife58degreesWOrbitalSlotBaikonur,KazakhstanSitePro...
