简介：张力爬精细的Fe-Mn二进制合金containing0.42-1.21wt.%Mn的行为从房间温度在温度范围被调查了到475Kunder10-50MPa。张力的测试以紧张率在uniaxail负担下面以经常的小标题速度被执行10(-4)s(-1)。压力代表和激活精力决心澄清变丑机制。稳定的状态的获得的变化爬关于为Fe-Mn二进制合金的应用压力的率在大约20MPa展出二不同政体，显示一个可能的变化在爬机制。平均压力代表是约2.2，它是在合金滑动的谷物boundry的一个特征。为塑料流动的激活精力从135～92kJ/mol变化，取决于Mn内容。

简介：Weinvestigateeffectsofannealingonmagneticpropertiesofathick(Ga,Mn)Aslayer,andfindadramaticincreaseoftheCurietemperaturefrom65to115Kbypostgrowthannealingfora500-nm(Ga,Mn)Aslayer.AugerelectronspectroscopymeasurementssuggestthattheincreaseoftheCurietemperatureismainlyduetodiffusionofMninterstitialtothefreesurface.Thedouble-crystalx-raydiffractionpatternsshowthatthelatticeconstantof(Ga,Mn)Asdecreaseswithincreasingannealingtemperature.Asaresult,theannealinginducedreductionofthelatticeconstantismainlyattributedtoremovalofMninterstitial.

简介：HighlytexturedHeusleralloyMn46Ni42Sn11Sb1ribbonswerepreparedbymeltspinning.TheannealedhighMncontentMn46Ni42Sn11Sb1ribboncross-sectionmicrostructure,crystalstructure,martensitictransformation（MT）,andmagnetoresistance（MR）propertieswereinvestigated.TheMRintheannealedribbonwasassessedbythemagneticfielddirectionperpendiculartotheribbonsurfacewiththemagneticfieldupto30kOe.Thelargenegativevalueof25%forMRwasobtainedat244K.Theexchangebias（EB）effectsoftheas-spunandannealedribbonswereinvestigated.Afterannealing,theEBeffectshavebeenimprovedbyabout25Oeatthetemperatureof50K.Themagnetizationshaveincreasedapproximatelyby10%morethantheas-spunribbon.

简介：材质为2A14铝合金深孔杯形毛坯件，由于壁薄，材料热变形温度范围窄，合金流变困难，若采用常规锻造的反挤压成形方法，势必造成杯体内、外壁变形不均，温度下降过快，变形抗力大，成形难度较大。等温成形工艺是零件毛坯精化和优化的一个重要途径，但对设备和模具的要求较高，成本高。因此运用有限元数值模拟结合试验对铝合金杯形件挤压成形工艺进行可行性研究，以减少研究试验成本。

简介：描述表面在nanocrystals熄灭孤立的离子中心的一个模型基于在做的离子和熄灭中心的nanocrystalline表面之间的精力转移被建议。熄灭的率在nanocrystal取决于离子的位置，在非选择的刺激下面的因此腐烂曲线通常是非指数的。与这个模型一起计算的腐烂曲线在对T-4(1)的好同意>(6)在ZnS的A(1)排放:Mn2+nanocrystals。

简介：我们在Mn50Ni40SnSbx(x=1，2，3，和4)合金。所有准备样品在房间温度与空间组一起展出B2类型结构。Sb的替换增加原子价电子集中并且减少联合起来的房间体积。作为结果，当x增加，magnetostructural转变向更高的温度很快变。在在不同磁场变化下面的磁性的熵的变化在这转变附近被探索。等温的磁化曲线展出典型metamagnetic行为，显示magnetostructural转变能被一个磁场导致。悦耳的martensitic转变和磁性的熵变化建议那Mn50Ni40SnSbx合金是应用在的吸引人的候选人固态制冷。

简介：

简介：Wereportthestudyofalowtemperatureclusterglassstatein5%Mn-dopedUGa3heavyfermioncompound.Thiscompoundtransformsfromaparamagneticstatetoaspin-clusterglassstate,whichisconfirmedbymeasuringthedcsusceptibilityandmagnetization.Theacsusceptibilityexhibitsafrequency-dependentpeakaroundTf,whichprovidesdirectevidenceoftheclusterglassstate.Byanalyzingthefield-dependentmagnetizationandfrequency-dependentacsusceptibilityindetail,wededucethatthiscompoundformsaspin-clusterglassstatebelowTf.

简介：Topreparemanganese-containingspinelsulfurtransferagentwithacidpeptization,ultrasonicwaveisusedforthefirsttimetomodifythestructureofsulfurtransferagentinthiswork.Minifixedbedreactorwasusedtoinvestigatetheeffectofultrasonicpower,timeandtemperatureonthestructureandoxidationadsorptionperformanceofsulfurtransferagentandtheadsorptionkineticsandmechanismofSO2wereanalyzed.SEM,TEM,XRDandN2adsorption-desorptiontechniqueswereemployedtocharacterizeandanalysethefunctionofsulfurtransferagent.Theresultsindicatedthatmanganese-containingspinelisakindofpromisingsulfurtransferagentandexhibitshighersulfurcapacityanddesulfurizationdegreeundertheselectedconditionsoftheultrasonicwavepowerof60%,andwiththetreatmentperiodfor3hatatemperatureof60°C.

简介：采用溶胶-凝胶法制备了Mn离子摩尔掺杂比．32分别为0，2％，4％，6％，8％的Ba（Ti1-xMnx）O3铁电薄膜。研究发现：当x为6％时，漏电流和矫顽场均达到最小，与未掺杂时相比，漏电流降低了约3个量级，矫顽场电场强度降低了约60％，P—E回线的矩形度增加。实验结果表明：通过适量掺杂Mn离子，可以改善BaTiO3铁电薄膜电学性能，提高铁电薄膜的极化，降低薄膜的漏电流。

简介：钨基合金由于具有高密度、高强度及高冲击韧性等优异性能而得到广泛应用。它在军事工业中主要用作穿甲弹、动能弹和导弹弹头。我单位对高密度钨基合金材料的研究已有多年历史，重点研究了添加Co，Mn，Cr等元素对钨基合金性能的影响，并研制出一系列密度和力学性能的钨基合金。

简介：Theneutron-richisotopeswithN40below68Ni,inmanywaysbehavesimilartothe“islandofinversion”nucleiwithN20.Wereportonthemeasurementsofexcitedstatesof63;65;67Mnviain-beam-rayspectroscopy.TheexperimentwasperformedattheRadioactiveIsotopeBeamFactory,RIKEN.Analysisofdatafor63;65;67MnobtainedintheSEASTARcampaignhasbeendone.Afewtransitionshavebeenidentifiedineachofthemprovidingachancetostudythesystematicstructureevolutionofn-richMnisotopesnearN40.

简介：

简介：BimetallicFe-Mnnanocatalystssupportedoncarbonnanotubes(CNTs)werepreparedusingmicroemulsiontechniquewithwater-to-surfactantratiosof0.4-1.6.ThenanocatalystswereextensivelycharacterizedbydifferentmethodsandtheiractivityandselectivityinFischer-Tropschsynthesis(FTS)havebeenassessedinafixed-bedmicroreactor.Thephysicochemicalpropertiesandperformanceofthenanocatalystswerecomparedwiththecatalystpreparedbyimpregnationmethod.Verynarrowparticlesizedistributionhasbeenproducedbythemicroemulsiontechniqueatrelativelyhighloadingofactivemetal.TEMimagesshowedthatsmallmetalnanoparticlesintherangeof3–7nmwerenotonlyconfinedinsidetheCNTsbutalsolocatedontheoutersurfaceoftheCNTs.Usingmicroemulsiontechniquewithwatertosurfactantratioof0.4decreasedtheaverageironparticlesizesto5.1nm.Thereductionpercentageanddispersionpercentagewerealmostdoubled.Activityandselectivitywerefoundtobedependentonthecatalystpreparationmethodandaverageironparticlesize.COconversionandFTSrateincreasedfrom49.1%to71.0%and0.144to0.289gHC/(gcath),respectively.WhiletheWGSratedecreasedfrom0.097to0.056gCO2/(gcath).C5+liquidhydrocarbonsselectivitydecreasedslightlyandolefinsselectivityalmostdoubled.

简介：Wehavestudiedthetwo-andthree-photonabsorption(2PAand3PA)propertiesofMn-dopedCsPbCl3twodimensionalnanoplatelets(2DNPs)andcubicnanocrystals.Comparedwiththeircubiccounterparts,theMn-doped2DNPsexhibitstrongerquantumconfinementeffectsthatcanmoreefficientlyenhancetheirdopantcarrierexchangeinteractionsandmultiphotonabsorption.Morespecifically,themaximumvolume-normalized2PAand3PAcrosssectionsofthe2DNPswere6.8and7.2timesgreaterthanthoseoftheircubiccounterparts,respectively,reachingupto1237GM∕nm3inthevisiblelightbandand2.24×10-78cm6·s2·photon-2∕nm3inthesecondbiologicalwindow,respectively.

简介：Differentoxygenandnitrogencontainingfunctionalgroupswerecreatedonthesurfaceofthemultiwalledcarbonnanotubes.Themulti-walledcarbonnanotubesweretreatedinultrasonicbathwithsulfuricornitricacid.Furthermorethesurfacetexturewasmodifiedbyincreaseoftheroughness.Inparticularaftertreatmentwiththeoxidizingnitricacid,incomparisontotheH_2SO_4orultra-sonictreatedsamples,cratersandedgesaredominatingthesurfacestructures.Manganeseoxidewasdepositedonthemultiwalledcarbonnanotubesbyprecipitationmechanism.Variousmanganeseoxidesareformedduringthedepositionprocess.Thesampleswerecharacterizedbyelementalanalysis,microscopy,thermalanalysis,Ramanspectroscopy,andbythezetapotentialaswellasX-raydiffractionmeasurements.Itwasshownthatthedepositedmanganeseoxidesarestabilizedratherbysurfacetextureofthemulti-walledcarbonnanotubesthanbycreatedfunctionalgroups.

简介：目前钛合金模锻件主要采用等温成形，需要专用的慢速可调压力设备和昂贵的高温镍基合金模具，并需要专门的加热装置。当前钛合件零件趋于多样化，企业更多采用柔性化生产，为每种锻件生产专用等温模锻模具和加热装置非常不经济，研究常规条件下钛合金变形存在的问题和解决方法，利用常规设备和普通模具锻造出具有较高尺寸精度的锻件，将使得钛合金的应用进一步扩大，降低制造成本。

简介：DigitaldecayspectroscopyofactinideisotopesatthegasfilledseparatorSHANSAlloverthechartofnuclides,theregiontothe“north-east”of208Pb,withZ≥84andN=128~130,hoststheshortest-livedαradioactivities,withhalf-livesintherangeofnanosecondstomicroseconds.Synthesisanddetectionofneutron-deficientisotopesabovethoriuminthisregionarechallengingduetotheirlowproductioncrosssectionsandshorthalf-lives.

简介：

简介：粉状的LiCr0.35Mn0.65O2的电的传导性在温度范围在高压力下面被测量直到26.22GPa由使用一个钻石铁砧房间的300413K。电导率和激活热含量在5.36GPa和21.66GPa不连续地变化，这被发现。在压力范围1.105.36GPa，压力增加激活热含量并且减少散布的搬运人，它最后导致传导性增加。在压力范围6.3221.66GPa和22.6026.22GPa，有压力增加的激活热含量减少，它有积极贡献到电的电导率增加。二导致压力的结构的阶段转变被发现由在原处在高压力下面X光检查衍射，它导致电导率和激活热含量的不连续的变化。