高温磁性材料高温磁性材料北京航空航天大学北京航空航天大学于荣海材料的分类:结构材料和功能材料材料的性质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铁磁性反铁磁性亚铁磁性物质的磁性(团队精神!)ADVANCEDMAGNETSADVANCEDMAGNETSMaximumenergyproduct(MGOe)19601970198019902000102030405060HadjipanayisSagawaTawaraClarkOjimaYoneyamaStrnatVelgeBuschowBenz,MartinNesbittHubbardKanekoSagawaOtsukiKanekoStrnatCroatKoon0YearsCoehoornWangManafNagelMishraMaximumenergyproduct(MGOe)19601970198019902000102030405060RaySmCo5Sm2Co17Nd2Fe14BRodewaldStrnat0YearsSennoNd2Fe14B/-Fe1stGenerationREM2ndgenerationREM3rdgenerationREMNanocompositeREMUpto100MGOe稀土永磁材料Wearehere!稀土永磁材料的应用稀土永磁材料的应用NdDyTbNdFeB磁盘驱动器光盘驱动器活动硬盘打印机驱动器声振元件法拉第元件声振元件磁带传动马达直流无刷马达线性同步电机点火线圈电机汽车电子磁共振成像仪交流伺服电机磁选机信息通信电子汽车SmCePrGdErSmCo医疗PCPCPC、数码相机针式打印机手机、传呼机光隔离器光纤通信电声器件微型磁带录音机空调直线电梯希望在新世纪取得突破的磁性材料1.比NdFeB性能更佳的新一代永磁材料2.高频低损耗、大功率的软磁材料3.大容量、高密度的磁记录材料4.低场大磁熵变的磁制冷材料5.高自旋极化率的自旋电子学材料6.有机磁性材料软磁材料永磁材料磁畴-MagneticDomain磁畴照片磁化过程和磁畴运动:iMMExamplesofmodernpermanentmagnets•SmCo5type(sintered)•Sm2Co17type(sintered)•BondedREcobaltmagnets(bondedSmCo5,Sm2Co17)•SinteredNd-Fe-Bmagnets•BondedNd-Fe-Bmagnets战斗机及其它飞行器—应用驱动多电飞机高温永磁材料的研究15yearsContractlife58degreesWOrbitalSlotBaikonur,KazakhstanSiteProtonVehicleAug.28,1997(Aug.27inUnitedStates)LaunchDate1Hughes601HPSpacecraftPanAmSatCorporationCustomer15yearsContractlife58degreesWOrbitalSlotBaikonur,KazakhstanSiteProtonVehicleAug.28,1997(Aug.27inUnitedStates)LaunchDate1Hughes601HPSpacecraftPanAmSatCorporationCustomerPAS-5Satelite,1997XIPS:TheLatestThrustinPropulsionTechnologyAnionpropulsionengineincorporatinghigh-tempSmComagnets(red)power...