简介：Thedistributioneffectofelectricfieldonthealignmentandattachmentofcarbonnanotubes(CNTs)wereinvestigated.Theexperimentalresultswerecomparedwiththesimulationresultsaccordingtothreedifferentshapedelectrodes.Inprevioussimulation,theroundshapedelectrodeswereexpectedtobemoreeffectiveforaligningandattachingasingleCNTbetweentwoelectrodesthanconicalorrectangularshapedelectrodes.Toverifythesimulationresults,threedifferentshapedelectrodeswereintroducedandasinglemulti-walledcarbonnanotube(MWNT)wasattached.TheoptimalconditionsforaligningandattachingMWNTssuchasthefrequency,appliedvoltageandconcentrationofMWNTssolutionwereinvestigated.Throughrepeatedexperiments,frequencyof100kHz-10MHz,appliedvoltageof0.3-1.3Vrms/μm,concentrationof5μg/mLinMWNTssolutionwereobtainedasapossibleconditionrangetoattachMWNTs.Undertheseconditions,theyieldofMWNTsattachmentbetweentwoelectrodeswasupto70%.Inprevioussimulation,furthermore,itwasverifiedthatthesizeofthestableorquasi-stableregionmadeCNTsalignedandattachedondifferentshapedelectrodesfromthecomparisonoftheexperimentalandsimulationresults.MostsingleMWNTattachmentwasaccomplishedontheroundshapedelectrodes.

简介：Thedistributionofelectricfieldforthealignmentandattachmentofcarbonnanotubes(CNTs)wassimulated.Tobeattachedatthedesiredplace,thealignedandattractedCNTsshouldbestayedinthedesiredareacalledthestableregionorthequasi-stableregionforaninstantwherethechangeofelectricfieldisminimized.Sincetheconicalelectrodehastheverynarrowsizedquasi-stableregion,fewCNTscanbeattached.Therectangularelectrodeshaveawidestableregion,solotsofCNTscanbeattached.Theresultsindicatethattheroundelectrodewhichhasapropersizedquasi-stableregionismoreeffectiveforaligningandattachingasingleCNTthantheconicalorrectangularshapedelectrodes.

简介：Anewapparatuswasdesignedtomeasuretheelectromagneticforceandacomputationalstudyofthetravelingmagneticfield(TMF)anditsapplicationtotheGa-In-Snmelt(withlowmeltingpoint),thentheforcesonAl,Mg,andLimelt,weresimulated.TheresultshowthattheelectromagneticforceonthemeltincreaseslinearlywiththeincreasinglengthofthemeltintheTMF.TheTMF-inducedLorentzforceincreaseswithincreasingfrequency,andthendecreases.Themaximumvalueisobtainedwhenthecurrentfrequencyis160Hz,overthatfrequencytheforcedecreasesrapidly.Whentheiron-coreisactivated,theforceincreaseswhenthemeltclosestotheiron-core.TheLorentzforceshaveinversely-proportionalrelationshipswiththeelectricalresistivity,thedfx/dρdecreasesandthedfy/dρincreaseswiththeincreasingelectricalresistivity(df/dρistheslopeoftheLorentzforceprofile).

简介：AZ31镁合金的团结的微观结构上的一个搏动的磁场的效果被调查。当搏动的磁场被用于AZ31合金的团结时，试验性的结果证明显著微结构精炼被完成。AZ31合金的当演员组微观结构的平均谷物尺寸被精制到107m。由熄灭AZ31合金，不同主要-Mg微观结构在团结的功课期间被保存。微观结构进化表明主要-Mg与搏动的磁场在球状的形状产生并且成长，有没有搏动的磁场的树枝状的形状的对比。搏动的磁场原因在团结期间融化传送对流，它做全部的温度融化一致，并且在液体/固体接口前面生产一个undercooling地区，它使成核率增加并且禁止的大树突。另外，在melt导致的朱尔热效果也加强谷物精炼效果和树突手臂的spheroidization。

简介：Anisotropicpowderwaspreparedwithprecursor(NdDy)-(FeCoNbCu)-Bsinteredmagnetsbyhydrogendecrepitation,desorption,andsubsequentannealingtreatment.Thehydrogendesorptionwasperformedinmagneticfieldsof0,1,3,and5T.Theorientationoftetragonalphasegrainsofthepowderwasevaluatedfromthehysteresisloopsmeasuredbyextractionmagnetometer.Residualhydrogencontentofthepowderwasevaluatedbythermal-magneticanalysis.ThepowderwithHcj,Br,and(BH)maxof1138kA·m-1,1.029T,and172.5kJ·m-3,respectively,wasachievedundertheconditionofthemagneticfieldof3T.Magneticpropertiesofthepowder,especially,theremanenceofthepowder,areenhanceduponmagneticfields,whichisduetobetterorientationofpowderparticlesandlessresidualhydrogeninthepowderresultedfromthemagneticfieldduringthehydrogendesorptionprocess.

简介：CuNi10Fe1Mnalloybilletunderrotatingelectromagneticfield(REF)wascharacterizedinthiswork.ThechangeofthecrystalorientationwasfirstexploredbyX-raydiffraction(XRD)andscanningelectionmicroscope(SEM);thecorrosionresistancewasdonebythreeelectrodessystem,andthenaturalseawaterwasusedascorrosionmedium.Theresultsdemonstratethatthestrongestcrystalorientationistransformedfromcrystalplane(200)to(111);moreover,thecrystalplane(111)whoseintensityisthe...

简介：TheprecipitatingkineticsofNi75Al17Zn8alloywasstudiedatboth873Kand973Kbymicroscopicphase-fieldmodel.Thecalculationresultsshowthattheorder-disordertransformationexperiencesthematrix→lowly-orderedL10phase→L12phaseat973K.AndthenucleationofL12particlesbelongstothespinodaldecompositionmechanism.Astemperatureincreases,orderingsofAlandZnatomsareresisted,butcoarseningofL12particlesispromoted.Thevalueofcoarseningkineticexponentsapproachesto1/2.Inaddition,thediscussionsaboutNi-Alanti-sitedefectandZnsubstitutionsforNisiteandAlsiteexhibitthatthehigherthetemperature,themoredistinctivetheNi-Alanti-sitedefect,butthelesstheZnsubstitution.