简介：A60%Fe/Al2O3catalystwaspreparedbytheco-precipitationmethod.ItwasreducedbyH2toproducemetallicFe,whichwasthensulfidedbyCS2toFe0.96SandFe3S4orphosphidedbytriphenylphosphine(PPh3)inliquidphasestoFe2PandFeP.Itwasfoundthattheironsulfides(Fe0.96SandFe3S4)exhibitedthelowactivityforthehydrodesulfurization(HDS)reactions.TheHDSactivitywasalsolowontheFe(metal)/Al2O3andFe2P/Al2O3catalystssincetheywereconvertedintoFe0.96SandFe3S4duringtheHDSreactions.Incontrast,theFeP/Al2O3wasfoundtobestableandactivefortheHDSreactions.Inparticular,FeP/Al2O3possessedsignificantlysmallerFePparticlesthanFeP/C,leadingtothesignificanthigherHDSactivityofFeP/Al2O3thanFeP/C.

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简介：Toeffectivelysolvetheagglomerationproblemsinthesolidstatereactionprocess,pre-addingglucoseisadoptedtothesynthesisofLiFePO4/CenergymaterialsusingFe–Pwasteslag.Theaverageparticle&grainsizeofLiFePO4/Cdecreases,andtheimpuritiesinLiFePO4/Ccompositesreducetoagreatextent.Itmakesgreatsensetothemassindustrialproduction.Theoptimumsynthesisconditionsdeterminedinthisworkarebasedontheorthogonalexperiments.Thesamplessynthesizedinascaleof500gexhibithighpurity,excellentelectrochemicalperformance,highreactionactivity,goodreversibility,andlowpolarizationlevel.Thedischargecapacitiesare145,134,117,and102mAh/gatthecurrentdensitiesof0.1C,0.2C,0.5Cand1C,respectively.ThisworkputsforwardapracticalsuggestionformassproducingenvironmentalbenignandlowcostLiFePO4/Cascathodematerialsoflithiumionbatteries.

简介：在传统的利用化爆和二级轻气炮作为驱动源的状态方程阻抗匹配实验中，为了考核不同标准材料的可信度，采用了标准材料交叉检验技术。即依次利用这些标准材料作为测量某个待测材料测量雨贡纽线的标准材料，通过比较待测材料雨贡纽线数据的一致性实现对这些标准材料的检验。2004年在神光-Ⅱ装置上完成的二倍频激光Al-Cu和Cu-A1阻抗匹配实验，是一种交叉实验。这两类实验不仅铝、铜二者互为标准材料和待测材料，而且实验包含了正反阻抗匹配两种类型：铝-铜正阻抗匹配实验中冲击波由低阻抗铝进入高阻抗待测材料铜，铜-铝反阻抗匹配实验中冲击波由高阻抗铜进入低阻抗待测材料铝中。

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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：ThedetailedmicrostructuresofNi80Fe20/Fe50Mn50superlatticeshavebeencharacterizedusingbothx-raydiffractiontechniquesandtransmissionelectronmicroscopy.Theobrivouslayeredstructure,typicalcolumnstructureandtwinswhichexistinNi80Fe20/Fe50Mn50superlatticeswereobservedthroughperformingtransmissionmicroscopy.Bycombiningthetechniqueoflowanglex-rayreflectivity(specularandoff-specularscans)withtheanomalousscatteringeffectandhigh-anglex-raydiffraction(usingconventionalx-ray),wequantitativelyanalysedthemicrostructuralvariationasafunctionofannealingtemperature.Itisfoundthatthelateralcorrelationlength,the(111)peakintensityofthesuperlatticesandtheaveragemultilayercoherencelengthallincreasewithariseinannealingtemperatureannealingcandecreasetherootmean-squareroughnessattheinterfacesofNi80Fe20/Fe50Mn50superlattices.theobtainedmicrostructuralknowledgewillbehelpfulinunderstandingthemagneticpropertiesoftheni80Fe20/Fe50Mn50exchangebiassystem.

简介：我们用散布理论的第一个原则在FM|NM|YIGmultilayers调查了热旋转转移效果。在房间温度，旋转Seebeck转矩TSSE~1:0J/(K？？

简介：Threetypesofcarbonnano-onions（CNOs）includingNi@CNOs.Fe3C@CNOsandFe0.64Ni0.36@CNOsnanoparticleshavebeensynthesizedbycatalyticdecompositionofmethaneat850℃usingnickel,ironandiron-nickelalloycatalysts.Comparativeandsystematicstudieshavebeencarriedoutonthemorphology,structuralcharacteristicsandgraphiticcrystallinityoftheseCNOsproducts.Furthermore,theelectrochemicalhydrogenstoragepropertiesofthreetypesofCNOshavebeeninvestigated.MeasurementsshowthattheNi@CNOshavethehighestdischargecapacityof387.2mAh/g,coiTespondingtoahydrogenstorageof1.42%.ThiscomparisonstudyshowstheadvantagesofeachcatalystinthegrowthofCNOs.enablingthecontrollablesynthesisandtuningthepropertiesofCNOsbymediatingdifferentmetalsandtheiralloyforusinginthefuelcellsystem.

简介：ThecorrelationbetweenphasestructuresandsurfaceacidityofAl2O3supportscalcinedatdifferenttemperaturesandthecatalyticperformanceofNi/Al2O3catalystsintheproductionofsyntheticnaturalgas(SNG)viaCOmethanationwassystematicallyinvestigated.Aseriesof10wt%NiO/Al2O3catalystswerepreparedbytheconventionalimpregnationmethod,andthephasestructuresandsurfaceacidityofAl2O3supportswereadjustedbycalciningthecommercialγ-Al2O3atdifferenttemperatures(600–1200C).COmethanationreactionwascarriedoutinthetemperaturerangeof300–600Catdifferentweighthourlyspacevelocities(WHSV=30000and120000mL·g-1h-1)andpressures(0.1and3.0MPa).ItwasfoundthathighcalcinationtemperaturenotonlyledtothegrowthinNiparticlesize,butalsoweakenedtheinteractionbetweenNinanoparticlesandAl2O3supportsduetotherapiddecreaseofthespecificsurfaceareaandacidityofAl2O3supports.Interestingly,NicatalystssupportedonAl2O3calcinedat1200C(Ni/Al2O3-1200)exhibitedthebestcatalyticactivityforCOmethanationunderdifferentreactionconditions.LifetimereactiontestsalsoindicatedthatNi/Al2O3-1200wasthemostactiveandstablecatalystcomparedwiththeotherthreecatalysts,whosesupportswerecalcinedatlowertemperatures(600,800and1000C).ThesefindingswouldthereforebehelpfultodevelopNi/Al2O3methanationcatalystforSNGproduction.

简介：当用于含能材料的表面涂层时，ParyleneC涂层优良的电绝缘性能，使得涂层后的炸药表面容易产生静电积累，因此可能会降低炸药的静电安全性。通过试验初步考核了ParyleneC涂层后炸药的静电摩擦感度，并与未涂层炸药以及带聚氨酯复合涂层的炸药进行对比。实验简易装置如图1所示。

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简介：为研制具有较宽频带微波吸收性能的材料,采用机械合金化法制备CoxFe80-xSi20（x=0,6,10,14摩尔百分数）合金粉体,使用SEM、XRD和矢量网络分析仪等测试手段,研究了合金粉体微观结构及Co-Fe-Si合金微波吸收性能。结果表明：制备的合金粉末呈片状,主要由-Fe相组成;Co的添加使Co-Fe-Si合金出现两个微波吸收峰。在较高频段处的微波吸收峰值随Co的添加先增大后减小。在涂层厚度为1.8mm时,x=10的合金低频处的反射率最小值最小,合金吸波峰频率和峰值分别为6.2GHz和-14.8dB,合金在高频处吸波峰频率和峰值分别为18GHz和-8.8GHz,合金反射率低于-5dB的带宽达14GHz,具有良好的微波吸收宽频效应。

简介：最近，陈和他的队在为太阳能的使用的新日光反射装置的理论、实际的学习是活跃的。这个工作在很少进步的许多年以后在日光反射装置的区域代表第一革新。技术的追踪和集中光学原则的数学发展，和实际实现和示范，两个都是这个领域里的很有趣的进展。许多应用程序为象太阳的电和太阳的工业进程热的产生那样的这种技术是可能的。

简介：Thediffusionmechanismofboroninbcc-Fehasbeenstudiedbyfirst-principlescalculations.Thediffusioncoefficientsoftheinterstitialmechanism,theB–monovacancycomplexmechanism,andtheB–divacancycomplexmechanismhavebeencalculated.ThecalculateddiffusioncoefficientoftheinterstitialmechanismisD0=1.05×10-7exp（-0.75eV/kT）m2·s-1,whilethediffusioncoefficientsoftheB–monovacancyandtheB–divacancycomplexmechanismsareD1=1.22×10-6f1exp（-2.27eV/kT）m2·s-1andD2≈8.36×10-6exp（-4.81eV/kT）m2·s-1,respectively.Theresultsindicatethatthedominantdiffusionmechanisminbcc-Feistheinterstitialmechanismthroughanoctahedralinterstitialsiteinsteadofthecomplexmechanism.ThecalculateddiffusioncoefficientisinaccordancewiththereportedexperimentresultsmeasuredinFe–3%Si–Balloy（bccstructure）.Sincethenon-equilibriumsegregationofboronisbasedonthediffusionofthecomplexesassuggestedbythetheory,ourcalculationreasonablyexplainswhythenon-equilibriumsegregationofboronisnotobservedinbcc-Feinexperiments.

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简介：对Fe∶ZnSe晶体的吸收光谱进行了实验测量和理论计算。通过测量Fe∶ZnSe晶体的透射光谱,给出了Fe∶ZnSe晶体的整体损耗曲线;受限于分光光度计的反射光谱测量范围,无法对该晶体在3μm附近的反射光谱进行直接测量。因此,基于几何光学理论,对晶体的反射光谱进行了理论计算。经对比,计算得到的反射光谱曲线与分光光度计可测区间的反射光谱吻合较好。这样,通过理论计算与实验测量相结合的方法,得到了可信的晶体反射光谱数据。在考虑晶体反射损耗的情况下,计算得到了晶体的吸收光谱曲线,并在此基础上计算了晶体的掺杂浓度,结果与标称掺杂浓度相符。

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