简介：

简介：阶段和磁电机在合金R(Co_(1-x)Sn_x)的热量的效果有x=的_20，0.025，0.050，0.075，和0.100被X光检查衍射分析和磁化测量调查。在RCo_2的Sn的替换是有限的。为RCo_2的合金的立方的MgCu_2-typestructure被X光检查粉末衍射证实，留下的合金主要由RCo_2阶段组成了，与一些RCo_3和R_5Sn_3杂质阶段一起。Theimpurity阶段随Sn内容的增加增加。合金的T_c不对为Dy(Co_(1-x)Sn_x)的Sn替换很敏感_2和Tb(Co_(1-x)Sn_x)_2inGd(Co_(1-x)Sn_x)_2，居里温度显著地增加。最大的磁性的熵在合金Dy(Co_(1-x)Sn_x)改变_2(x=0，0.025，0.050，0.075)是5.78，5.43，3.88，并且2.98J·kg~(-1)·K~(-1),分别地，并且那些在Tb(Co_(1-x)Sn_x)_2(x=0，0.025)是3.44，and2.29J·kg~(-1)·K~(-1)分别地0-2.0T在应用的地里变化。

简介：Inthisarticle,anovelheattreatmentmethod,deformationheat(DH)treatment(extrusion+aging),wasemployedonahypereutecticaluminumsiliconalloy(LM28-0.3wt.%Nd),anditseffectonmicrostructureandmechanicalpropertiesofthisalloywasinvestigated.ItcanbeconcludedthattheeutecticmicrostructuredisappearsaftertheDHtreatment,inthemeantimethemorphologyofα(Al)solidsolutionwastransformedfromfir-treeandcellulartoequiaxed,Siwasrefinedwithgrainsizesofabout1-10μmanddistributeddispersedly,evensomeofthembecameglobularshape,whichcanreducestressaccumulationeffectively.MechanicalpropertiestestindicatedthattheDHtreatmentcouldsignificantlyimprovetheroom-temperaturestrengthandhavelittleeffectonthehigh-temperaturestrengthofLM28-0.3wt.%Ndalloy.Thefracturemechanismisductilefracturebyfracturemorphologyanalysis.

简介：EffectofaddedCo2+(aq)oncopperelectrowinningwasstudiedusingdopedpolyaniline(Pani)andPb-Ag(1%)anodesandastainlesssteelcathode.ThepresenceofaddedCo2+(aq)intheelectrolytesolutionwasfoundtodecreasetheanodepotentials.TheoptimumlevelofCo2+(aq)concentrationintheelectrolyte,withrespecttothemaximumsavingofpowerconsumptionwasestablished.Linearsweepvoltammetry(LSV)wasusedtostudytheinfluenceofaddedCo2+(aq)ontheanodicprocessesinacoppersulfate-sulfuricacidelectrolyte.Theoxygen-evolutionpotentialforPanianodeisdepolarisedatlowercurrentdensities(≤0.01A/cm2)andattainssaturationatρ(Co2+)o≈0.789g/L;whilsttheoxygen-evolutionpotentialforPb-Ag(1%)anodeisdepolarisedathighercurrentdensities(≤0.02A/cm2)andattainssaturationatρ(Co2+)o≈1.315g/L.Thepreferredorientationsofthecopperdepositschangefrom(220)to(111)withtheadditionof0.394?0.789g/LCo2+buthigherconcentrationsfavor(220)orientationagain.

简介：TheeffectsofethanolsolutionsonlowerpowerArICPdischargewerestudiedbymeasuringplasmatemperatures(gastemperature,excitationtemperature,ionizationtemperatureandelectrontemperature)andelectronnumberdensities.Thetemperaturesandelectronnumberdensitieswerereducedwiththeincreasingofethanolconcentration.TheICPsystemismuchapartfromLTEconditions.Thus,ethanolsolutionswillplaceareducingeffectonspectrallineintensity.

简介：TheeffectofrepeatedmeltingofthemotheringotonthethermalstabilityofaZr60All5Ni25glassyalloywasinvestigatedbydifferentialscanningcalorimetry(DSC).Experimentalresultsindicatethataftertherepeatedmeltingoftheingotsat1300and1580K,theglasstransitiontemperatureTgin.easesfrom686.4to690.7and696.8KandtheonsettemperatureofcrystallizationTxfrom757.9to758.6and763.4K,respectively,indicatingthatthethermalstabilitybecomeshigheraftertherepeatedarcmeltingofthemotheringotandthatitismoreeffectiveathighertemperature.Withintheframeworkofstructureheredity,theoriginoftheimprovementofthethermalstabilityofZr60AllsNi25bulkglassyalloyisdiscussed.

简介：Ti-23Al-17Nb的机械性质(鼹鼠部分，%)在房间温度的激光横梁焊接合金关节比得上基础材料的。然而，同样焊接的关节的力量和韧性在高温度循环以后严重败坏。微观结构和关节的机械性质上的welded以后热处理的效果被调查。热处理在980oscopy被拿，扫描电子显微镜学和X光检查衍射计。结果显示出Yb增加的0.17%的那增加(集体部分)密度“2519A合金板和还原剂t的粒子吗？

简介：树突的微观结构规模例如主要、第二等的树突手臂间距，在interdendritic区域以内控制分离侧面和第二等的阶段的形成，它决定团结的结构的性质。主要阶段的主要、第二等的树突手臂间距上的调查在这研究在方向性地团结的Pb-26wt%Bi低亚硫酸钠包晶体的合金期间被执行，并且系统的研究与不同直径用圆柱的样品被进行(=1.8和7.0公里)武装间距以便在主要、第二等的树突上分析样品直径的效果。在这个工作，生长速度上的树突手臂间距的依赖被建立。另外，有关主要、第二等的树突手臂间距的试验性的数据与从文学的主要预兆的树枝状的模型相比。在1.8-mm-diameter样品和7.0-mm-diameter样品的树突手臂间距的试验性的结果之间的比较也被进行。

简介：InordertocontrolthesizeanddistributionofthehighconductiveFe2PinLiFePO4/Fe2Pcomposite,twodifferentcoolingrates(Fast:15℃·min-1,Slow:2℃·min-1)wereemployedaftermechanicalalloying.Thedischargecapacityofthefastcooledwas83mAh·g-1andtheslowcooled121mAh·g-1.TheparticlesizeofthesynthesizedpowderwasexaminedbytransmissionelectronmicroscopyanddistributionofFe2Pwascharacterizedusingscanningelectronmicroscopy(SEM).Inaddition,two-stepheattreatmentwascarriedoutforbetterdistributionofFe2P.X-raydiffraction(XRD)andRietveldrefinementrevealthatLiFePO4/Fe2Pcompositeconsistsof95.77%LiFePO4and4.33%ofFe2P.