纳米复合材料外文翻译翻译英文帮助外文翻译英文翻译复合材料

浙江师范大学生化学院本科毕业设计论文外文翻译译文1FEFE3BY2O3纳米复合材料在千兆赫范围内的电磁微波吸收性能刘九荣A、伊藤正博A、KENICHIMACHIDAAA大阪大学尖端科学技术合作研究中心吹田市,大阪5650871,日本接到于2003年2月24日，2003年9月8日录用摘要FEFE3BY2O3纳米复合材料采用熔体纺技术研发，其电磁微波吸收性能在0052005GHZ范围内。与FE/Y2O3复合物相比，FEFE3BY2O3的共振频率转移到一个较高的频率范围，这归因于四方FE3B的大各向异性场HA（04MA/M）。其相对介电常数（）RRJ一直在低于0510GHZ的地区，这表明复合粉体具有高电阻率（）。含质量分数10M80，厚度63MM的FEFE3BY2O3粉末的树脂复合材料分别在2765GHZ频率范围内获得有效的电磁微波吸收（反射损耗99）中制备BA3CO18FE236CR06O41。通过在乙烷中将BA3CO18FE236CR06O41（20DB）。值在0118GHZ范围R随着频率迅速从54减少到05。此外，值也随着频率从15减少到03，其01R18GHZ内没有呈现铁磁共振峰（图2），虽然，相对介电常数（）在RRJ218GHZ范围保持几乎不变（17，15）。但是，FE/BA3CO18FE236CR06O41RR树脂复合材料的一个铁磁共振峰在418GHZ范围被观察到（图2（C）。早期的结果表明，在BA3CO18FE236CR06O41添加FE粉末形成纳米复合材料对减少涡流损耗具有显著影响。总之，通过将FE和BA3CO18FE236CR06O41进行球磨，已经分别制备了FE/BA3CO18FE236CR06O41（38，70或85VOLFE）纳米复合材料，其中BA3CO18FE236CR06O41具有磁体和绝缘体压制的涡流损耗的双重作用。FE/BA3CO18FE236CR06O41纳米复合材料具有比FE和BA3CO18FE236CR06O41更高的HC值。与铁氧体相比，含70或85VOLFE的FE/BA3CO18FE236CR06O41纳米复合材料有希望在较低频率范围生产更薄、更轻的电磁波吸收材料。这项工作得到了日本教育、科学、体育、文化部门和从2003年的新能源和工业技术发展组织的研究奖助金的支持（NEDO）。卡号15205025原文1ELECTROMAGNETICWAVEABSORPTIONPROPERTIESOFAFE/FE3B/Y2O3NANOCOMPOSITESINGIGAHERTZRANGEJIURONGLIU,MASAHIROITOH,ANDKENICHIMACHIDAAACOLLABORATIVERESEARCHCENTERFORADVANCEDSCIENCEANDTECHNOLOGYOSAKAUNIVERSITY,21YAMADAOKA,SUITA,OSAKA5650871,JAPANRECEIVED24FEBRUARY2003ACCEPTED8SEPTEMBER2003ABSTRACTNANOCOMPOSITESAFE/FE3B/Y2O3WEREPREPAREDBYAMELTSPUNTECHNIQUE,ANDTHEELECTROMAGNETICWAVEABSORPTIONPROPERTIESWEREMEASUREDINTHE0052005GHZRANGECOMPAREDWITHAFE/Y2O3COMPOSITES,THERESONANCEFREQUENCYFROFAFE/FE3B/Y2O3SHIFTEDTOAHIGHERFREQUENCYRANGEDUETOTHELARGEANISOTROPYELDHAOFTETRAGONALFE3B04MA/MTHERELATIVEPERMITTIVITYWASCONSTANTLYLOWOVERTHE0510GHZREGION,WHICHRRJINDICATESTHATTHECOMPOSITEPOWDERSHAVEAHIGHRESISTIVITYTHEEFFECTIVE10MELECTROMAGNETICWAVEABSORPTIONREECTIONLOSS999INPURITYBYMEANSOFINDUCTIONMELTINGINARAMORPHOUSY5FE775B175ALLOYRIBBONSWITH15MMINWIDTHANDABOUT30MMINTHICKNESSWEREPREPAREDBYTHESINGLEROLLERMELTSPUNAPPARATUSATAROLLSURFACEVELOCITYOF20M/SUSINGTHEEARLIERINGOTSASTHESTARTINGMATERIALSAFTERBALLMILLING,THEPOWDERSWITHPARTICLESIZESOF24MWEREHEATEDTO953KINHEWITHAHEATINGRATEOF40K/MINFOR10MINSUBSEQUENTHEATINGAT573KFOR2HINO2STREAMGAVETHERESULTANTPOWDERSWHICHWERECHARACTERIZEDBYXRAYDIFFRACTIONXRDTHEMICROSTRUCTURESWEREOBSERVEDONAHIGHRESOLUTIONSCANNINGELECTRONMICROSCOPEHITACHIS50003RESULTSANDDISCUSSION31STRUCTURECHARACTERISTICSEPOXYRESINCOMPOSITESWEREPREPAREDBYHOMOGENEOUSLYMIXINGTHECOMPOSITEPOWDERSWITH20WTEPOXYRESINANDPRESSINGINTOCYLINDRICALSHAPEDCOMPACTSTHESECOMPACTSWERECUREDBYHEATINGAT453KFOR30MIN,ANDTHENCUTINTOTOROIDALSHAPEDSAMPLESOF700MMOUTERDIAMETERAND304MMINNERDIAMETERTHESCATTERINGPARAMETERSS11,S21OFTHETOROIDALSHAPEDSAMPLEWEREMEASUREDUSINGAHEWLETTPACKARD8720BNETWORKANALYZERTHERELATIVEPERMEABILITYRANDPERMITTIVITYRVALUESWEREDETERMINEDFROMTHESCATTERINGPARAMETERSASMEASUREDINTHEFREQUENCYRANGEOF0052005GHZTHEREECTIONLOSSRLCURVESWERECALCULATEDFROMTHERELATIVEPERMEABILITYANDPERMITTIVITYATGIVENFREQUENCYANDABSORBERTHICKNESSWITHTHEFOLLOWINGEQUATIONS21/21/20TANH/INRRZJFDC300LOG|IIRLZWHEREFISTHEFREQUENCYOFTHEELECTROMAGNETICWAVE,DISTHETHICKNESSOFANABSORBER,CISTHEVELOCITYOFLIGHT,Z0ISTHEIMPEDANCEOFAIR,ANDZINISTHEINPUTIMPEDANCEOFABSORBERFIG1THEXRDPATTERNOFY5FE775B175POWDERS（A）ASOBTAINED,（B）AFTERANNEALINGAT953KFOR10MININHEGAS,AND（C）OXIDATIONDISPROPORTIONATINGTHESAMPLE（B）INO2AT573KFOR2HFIGURE1SHOWSTHETYPICALXRAYDIFFRACTIONPATTERNSMEASUREDONTHEAMORPHOUSY5FE775B175POWDERAASOBTAINED,（B）AFTERANNEALINGAT953KFOR10MININHE,AND（C）AFTEROXIDATIONDISPROPORTIONATINGSAMPLE（B）AT573KFOR2HINO2FROMFIG1（A）,ITWASFOUNDTHATTHEY5FE775B175ALLOYPOWDERSPREPAREDBYUSINGTHEMELTSPUNTECHNIQUEWEREAMORPHOUSAFTERANNEALINGASSHOWNINFIG1（B）,THEPOWDERSWERECOMPOSEDOFBOTHTHEFE3BANDY2FE14BPHASESAFTEROXIDATIONDISPROPORTIONATION,THEPHASEOFY2FE14BDISAPPEAREDCOMPARINGTHEXRDPATTERNINFIG1（B）WITHTHATOFFIG1（C）,WESEETHATTHEINTENSITYFORTHEMAINPEAKOFFE3B（2445）,WHICHISJUSTAMAINPEAKOFAFE（110）,ISMUCHSTRONGERAFTEROXIDATIONTHISRESULTINDICATESTHATAFEISFORMEDBECAUSEOFTHEOXIDATIONOFY2FE14BINTOAFE,FE3BANDY2O3NANOPARTICLESBUTNOPEAKOFY2O3WASOBSERVEDFIG1CTHEREASONCOULDBETHATTHEY2O3PARTICLESIZEWASTOOSMALLTOBEDETECTEDTHEGRAINSIZESOFFE3BANDAFE,ABOUT30NM,WEREDETERMINEDFROMTHELINEBROADENINGOFTHEXRDPEAKSUSINGTHESCHERRERSFORMULATHISMEASUREMENTAGREESWITHTHEOBSERVATIONRESULTSBYHIGHRESOLUTIONSCANNINGELECTRONMICROSCOPY32MICROWAVEPROPERTIESTHEFREQUENCYDEPENDENCEONTHERELATIVEPERMITTIVITYFORRESINCOMPOSITES,INCLUDING80WTAFE/FE3B/Y2O3POWDERS,ISSHOWNINFIG2ATHEREALPARTRANDIMAGINARYPARTOFRELATIVEPERMITTIVITYWEREALMOSTCONSTANTOVERTHE0510RGHZRANGE,ANDHENCETHERELATIVEPERMITTIVITYSHOWEDALMOSTCONSTANTRRJ15，06THISNDINGINDICATESHIGHRESISTIVITYOFTHECOMPOSITESTHERRMEASUREDRESISTIVITYVALUEWASAROUND100MFORTHEAFE/FE3B/Y2O3COMPOSITES,BUTTHEELECTRICRESISTIVITYOFTHEND2FE14BCOMPOUNDWASREPORTEDAS14106M9THEHIGHRESISTIVITYOFTHENANOCOMPOSITESISASCRIBEDTOTHEPOWDERSCONSTITUENTSFE3B,AFE,ANDY2O3NANOPARTICLESEMBEDDEDAMONGFE3BANDAFEPARTICLES,Y2O3PLAYSAROLEASTHEINSULATORTHEREALPARTANDIMAGINARYPARTOFRELATIVEPERMEABILITYAREPLOTTEDASARRFUNCTIONOFFREQUENCYINFIG2BTHEREALPARTOFRELATIVEPERMEABILITYDECLINEDRFROM16TO09WITHFREQUENCYHOWEVER,THEIMAGINARYPARTOFRELATIVEPERMEABILITYINCREASEDFROM01TO06OVERARANGEOF171GHZ,ANDTHENDECREASEDINTHERHIGHERFREQUENCYRANGETHEIMAGINARYPARTOFRELATIVEPERMEABILITYEXHIBITEDAPEAKINABROADFREQUENCYRANGE29GHZCOMPAREDWITHAFE/Y2O3,THEAFE/FE3B/Y2O3COMPOSITESSHOWEDLOWERVALUESINBOTHTHEREALANDIMAGINARYRPARTSOFPERMEABILITYASSHOWNINFIG2BTHESELOWERVALUESAREDUETOTHERSMALLERMAGNETIZATIONOFFE3BTHANAFETHEREFORE,AFE/FE3B/Y2O3HASASMALLERRELATIVEPERMEABILITYTHANAFE/Y2O3BECAUSEOFTHECOOPERATIVEEFFECTOFAFEANDFE3BHOWEVER,THEMAXIMUMPOINTOFCURVEFORTHEAFE/FE3B/Y2O3COMPOSITESRSHIFTEDTOTHEHIGHERFREQUENCYVALUE71GHZASARESULT,THENANOCOMPOSITEPOWDERSPOSSESSAREMARKABLEFEATUREFORELECTROMAGNETICWAVEABSORPTIONINTHEHIGHERFREQUENCYREGIONFIG2FREQUENCYDEPENDENCESOFRELATIVEPERMITTIVITYRAANDPERMEABILITYRBFORTHERESINCOMPOSITESWITH80WTOFAFE/Y2O3ANDAFE/FE3B/Y2O3POWDERS33ABSORPTIONPERFORMANCEFIGURE3ASHOWSATYPICALRELATIONSHIPBETWEENRLANDFREQUENCYFORTHERESINCOMPOSITESWITH80WTAFE/FE3B/Y2O3POWDERSFIRST,THEMINIMUMREECTIONLOSSWASFOUNDTOMOVETOWARDTHELOWERFREQUENCYREGIONWITHINCREASINGTHETHICKNESSSECOND,THERLVALUESOFRESINCOMPOSITESLESSTHAN20DBWEREOBTAINEDINTHE2765GHZFREQUENCYRANGE,WITHTHICKNESSOF63MM,RESPECTIVELYINPARTICULAR,AMINIMUMRLVALUEOF33DBWASOBSERVEDAT45GHZONASPECIMENWITHAMATCHINGTHICKNESSDMOF4MM,ANDTHEMINIMUMDMVALUEOF3MMWASOBTAINEDAT65GHZRL27DBITISWELLKNOWNTHATONECRITERIONFORSELECTINGASUITABLEELECTROMAGNETICABSORPTIONMATERIALISTHELOCATIONOFITSNATURALRESONANCEFREQUENCYFRTHENATURALRESONANCEFREQUENCYISRELATEDTOTHEANISOTROPICELDHAVALUEBYTHEFOLLOWINGEQUATION42RAFHWHEREISTHEGYROMETRICRATIOANDHAISTHEANISOTROPICELDMANYWORKERSHAVEREPORTEDTHATTHELARGEHAVALUESOFTHEMTYPEFERRITESUSEDASELECTROMAGNETICWAVEABSORPTIONMATERIALSRESULTINAREMARKABLESHIFTTOHIGHFREQUENCYRANGEINFR1012THEREFORE,ONECANEXPECTTHATTHEFREQUENCYOFMICROWAVEABSORPTIONFORTHEMETALLICMAGNETSCANBECONTROLLEDBYCHANGINGTHEFRVALUEOFMATERIALSFIGURE3BSHOWSTHEFREQUENCYDEPENDENCEOFRL,FORRESINCOMPOSITESWITH80WTAFE/Y2O3POWDERSTHERLVALUEOFTHERESINCOMPOSITESLESSTHAN20DBWASOBTAINEDINAFREQUENCYRANGEOF2035GHZTHEELECTROMAGNETICWAVEABSORPTIONPROPERTIESOFAFE/SMO,AFE/Y2O3,ANDAFE/FE3B/Y2O3RESINCOMPOSITESPREPAREDUNDERTHEOPTIMIZEDCONDITIONSARESUMMARIZEDINTABLEIACOMPARISONOFTHESAMPLEAFE/FE3B/Y2O3WITHAFE/Y2O3SHOWSTHEMINIMUMREECTIONPOINTHASSHIFTEDTOAHIGHERFREQUENCY,FROM26TO45GHZTHISSHIFTISATTRIBUTEDTOTHEPARTIALREPLACEMENTOFCUBICAFEBYTETRAGONALFE3B,WHICHRESULTSINTHEINCREASEOFNATURALRESONANCEFREQUENCYFIG2BINAFE/FE3B/Y2O3NANOCOMPOSITES,AFEANDFE3BEXISTSIMULTANEOUSLYASMAGNETSCOMPAREDWITHAFE16GHZ,FE3BHASLARGERNATURALRESONANCEFREQUENCY14GHZASCALCULATEDFROMEQ4,WHICHISDUETOTHELARGEANISOTROPYELD04MA/M13BECAUSEOFTHEIRCOOPERATIVEEFFECT,THENATURALRESONANCEFREQUENCYFROFAFE/FE3B/Y2O3ISLOCATEDBETWEENTHATOFAFEANDFE3BHOWEVER,INTHE2735GHZRANGETHEMATCHINGTHICKNESSDMOFAFE/Y2O3ABSORBERSISTHINNERTHANAFE/FE3B/Y2O3FIG3BECAUSETHEVALUEOFAFE/Y2O3ISLARGERTHANTHATOFRAFE/FE3B/Y2O3INTHISFREQUENCYRANGEFORMAGNETICELECTROMAGNETICWAVEABSORPTIONMATERIALS,FM,WHENRL20DBCOMPAREDWITHFE/BA3CO18FE236CR06O41ONESTHEVALUERAPIDLYRDECLINEDWITHFREQUENCYFROM54TO05INTHE0118GHZFURTHERMORE,THERVALUEALSODECREASEDFROM15TO03WITHFREQUENCY,ANDNOFERROMAGNETICRESONANCEPEAKWASPRESENTINTHE0118GHZFIG2,ALTHOUGHTHERELATIVEPERMITTIVITYREMAINEDPRACTICALLYUNCHANGEDINTHE218GHZ（17RRJRAND15）BUTONEFERROMAGNETICRESONANCEPEAKCANBEOBSERVEDINTHE418GHZFORTHEFE/BA3CO18FE236CR06O41RESINCOMPOSITESFIG2CTHEEARLIERRESULTSINDICATEDTHATTHEBA3CO18FE236CR06O41ADDITIONINTOFEPOWDERSTOFORMNANOCOMPOSITESHASSIGNICANTEFFECTFORREDUCINGTHEEDDYCURRENTLOSSINCONCLUSION,FE/BA3CO18FE236CR06O4138,70,OR85VOLFENANOCOMPOSITESHAVEBEENPREPAREDBYBALLMILLINGFEWITHBA3CO18FE236CR06O41POWDERS,RESPECTIVELY,OFWHICHBA3CO18FE236CR06O41PLAYSTHEDOUBLEROLESASMAGNETANDINSULATORFORSUPPRESSINGTHEEDDYCURRENTLOSSFE/BA3CO18FE236CR06O41NANOCOMPOSITESSHOWEDHIGHERHCVALUESTHANFEANDBA3CO18FE236CR06O41COMPARINGWITHFERRITES,FE/BA3CO18FE236CR06O41NANOCOMPOSITESWITH70OR85VOLFEAREPROMISINGFORPRODUCINGTHINNERANDLIGHTEREMWAVEABSORBERSINLOWGHZRANGETHISWORKWASSUPPORTEDBYGRANTINAIDFORSCIENTICRESEARCHNO15205025FROMTHEMINISTRYOFEDUCATION,SCIENCE,SPORTS,ANDCULTUREOFJAPAN,ANDINDUSTRIALTECHNOLOGYRESEARCHGRANTPROGRAMIN2003FROMNEWENERGYANDINDUSTRIALTECHNOLOGYDEVELOPMENTORGANIZATIONNEDOOFJAPAN1YNAITOANDKSUETAKI,IEEETRANSMICROWAVETHEORYTECH19,65（1971）2SAOLIVER,MLCHEN,CVITTORIA,ANDPLU