低频磁屏蔽涂层材料的研究

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1、南京理工大学硕士学位论文低频磁屏蔽涂层材料的研究ABSTRACTWiththeraPiddeve1oPmentofmodemSCience助dtechnology，theenvironment助dhumanlifehavebeeninerasinglya月七ctedbytherad1at10nofelectromagneticwave.Th“efore，itisofgreatsi咖ficancetoshieldtheeleC七’Oma助etic叭旧veinanefectiveway朗dtoco幻ductther

2、ese峨hontheshieldingmalerialsoftheelectromagnetic叭旧ve.Cureni1y，therearemanyresearchesOnthehighandm记die加quencyshleldinglnaterials胡dthosematerialsproduceas0undshie1dingefect.However，thelow一frequency(below10kHz)shiddingmaterialsareseldom川”died.Inthethesis，themat

3、erials，10二丘cquencymagnetlcshieldinge月飞ctivenessisinvestigated初thHelmholtZcoil，andthemicrostnjctureofFe一51一Nb一V一BamorphousmaterialsandtheProcessofcrysta】1iZationundertheclrcurnstanceofheatingareana】yZedwiththehelPof芜raydifr朗tionandDiferent1aiThennalAnalysisDu

4、etotheextremebritlenessofFe一based比ltmaterialsaftertheanealing，itisdimculttomanufactue.TosolvethisProblem，theanJI喇edFe一basedmateriaisare印m而。以曰intothecoatingstofing.Andthefactorsthatgreatlyafe‘tthefow一丘闪uency抓eldingperforman‘eareanalyzed，suchasthe别口ountofstu伍n

5、gmaterial，5。】ventaDdthecouP】Ingagent，thecoating而cknessandtheharde川ngteChoofogy.1llroughtheresearch，itfindsoutthatamongtheFe一51.Nb.V一B，凡一51.Nb.M小BandFe一51·Bamorphousmat州al气Fe-Si一Nb一V一BajmorPhousmateriall.sabetershieldinge任改tlnlow.斤equency劝犯ethantheother妇邢0，Wh

6、i比amountsto30dB.Besides，aner450℃朗d560℃anealing，abetershieldingefectivenessisyieldedWhentheanealedFe一basedmateriaiisconuninutedintothecoatingstUfing，theamountof引泊fingmat晰al，solvent即dthecouPlingageni，thecoatingthicknessandthe加司印访gtochnologyhavegreatinfl二cesont

7、helo二肚quencyshieldingefl免ctlvenss.从飞cnthebestradloofFe一basedgtUf加gandepoxyresinis4:1，themagnetlcshielding已价ctivenessofthemateriaisachievesthehighva】ue.从七朋thebestradioofFe一asedslufing，e脚xyresinandsolventis20:5:8;thema助eticshieldingefectlvenessisalso加proved诫th

8、theincreaseofcoating面ckness.Howeve‘栩水IngthePeribn刀anceandcost访toconsideratio残itsqultepropertomakesureth滋theCOa倾ng而c比亡ssisabou玄200pm.Usua1ly，itisusefultoimPr0vethecoatingefe比venessifitissolidfied