非稀土取代制备高性能锶永磁铁氧化材料

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1、AbstractInthispaperwehavepreparedSrFell．s5C00．15019bysolid—phasesinteringmethod，andstudiedthechangesofthestructureandcompositionofSrFell85C00．15019phasewithdifferentcalciningtemperatureandwetpressmoldingmagneticfield．WechangethecontentofCaC03，A1203，Si02，H3803as

2、asecondarymillingadditives，usingcalciumgluconateasasecondarymillingaddeddispersant，andthenwithorthogonalexperiment，wechoosethemostappropriatecombinationofsecondaryrecipeingredientsanddispersantadditivestopreparehigh·-performanceM--typestrontiumferriteSrFell．ssC

3、oo．15019．Inthesecondpartofthepaper,wehavepreparedtheyttrium．dopedM-typestrontiumferriteSrl吖YxFelI．s5C00．15019calcinedmaterialsbysolid．phasesinteringmethodin150℃for3h．Thenthecalcinedmaterialswerepressedformagnetsundertheconditionoforientedmagneticfieldandsintere

4、din1295℃for3h．WehaveusedX-raydiffraction、scanningelectronmicroscopeandmagnetictesteranalyzethephasestructureofthesinteredmagnets，thesurfacemorphologyofthesinteredmagnetandthemagneticpropertiesofthesinteredmagnetsrespectively．Theresultsshowedthatwiththeincreaseo

5、fthesinteringtemperature，thecompositionQ．Fe203phasestructurewhichinthephaseofSrFelI．ssC00．15019diffractionpeakpresentweakened；withtheincreaseofthemagneticfieldstrengthH，themagneticenergyoftheSrFen．s5C00．15019sampleincreasing；butwhen肛600kA／m’1magneticintensity,t

6、hemagneticenergyofthesampleremainedunchanged；intheconditionofthesecondaryadditiveamountCaC030．8wt％，A12030．9wt％，Si020．5wt％，H38030．3wt％，calciumgluconate0．6wt％，thehighperformanceofSrFell．S5COo．15019ferritecanbeintegrated；withtheincreaseofyttrium．doped．thelatticeco

7、nstantaincreasesfirstofallandthendecreases，cincreasesslowly,a／cfirstincreasesandthendecreases，crystalX—raydensity呔啪yapproximationincreaseslinearly．SEMshowedthatthemagnethaspreparedatypicalhexagonalstructuremorphology；Magneticstudiesshowedthatwiththedopingofyttr

8、iumincrease，theremanenceBrincreasingmonotonically,intrinsiccoercivity蛾andmaximumenergyproduct仍切maxandcoercivitymagneticinduction风barefirstincreasesandthendecreases．Whenthex=