简介：ＦｒａｃｔｕｒｅＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＳｉＣ（ｐ）／ＡｌＣｏｍｐｏｓｉｔｅｓＧｕＨｏｎｇｗｅｉ；ＣａｏＬｉ；ＹｕａｎＧｕａｎｓｅｎ；ＬｉｕＡｎｓｈｅｎｇ；ＷｕＺｉｑｉｎａｎｄＣｈｅｎＬａｎｆｅｎｇ（古宏伟），（曹利），（袁冠森），（刘安生...

简介：SiCwhiskerswith'rosarybead'morphologyweresynthesizedusingsuitablesiliconsourceandcarbonsourcethroughsolidreactionatthetemperatureabove1537K.ThediameterandlengthoftheSiCwhiskerswereabout0.1-1.0μmand20-100μm,respectively.Thelargestdiameteroftheirenlargedendsofthewhiskerswasabout0.2-1.0μm,anditgraduallyandsmoothlydecreasedtothesizeoftheplainpartofthewhiskers.TheresultsofX-raydiffractionanalysisshowthatthecrystallinestructureoftheobtainedSiCwhiskersisβ-SiC.ItisconsideredthattheSiCwhiskersgrowviaavapor-solidmechanism.

简介：Thebinarycomplexesofeuropiumwithbenzoicacidanditsderivatives(phthalicacid,m-phthalicacid,o-aminobenzoicacid,salicylicacid,andsulfosalicylicacid)weresynthesizedandtheircompositionswereidentifiedbyelementalanalyses.UVandIRofthecomplexeshavebeeninvestigated.TheUVspectraindicatedthatthecomplexes'ultravioletabsorptionweremainlytheligands'absorption.TheIRspectrashowedthattheIRspectraofcomplexesaredifferentfromthoseoffreeligands.Thefluorescencepropertiesofthemwereinvestigatedbyusingluminescencespectroscopy,theresultsshowedthatonlythreecomplexesappearasbetterluminescence,theywereEu-benzoicacid,Eu-m-phthalicacidandEu-phthalicacid,whiletheothersexhibitedtheligands'widebandemission.

简介：一系列TbDyFe电影被DC磁控管劈啪作响准备。阶段结构和样品电影的磁性上的底层温度和退火的温度的效果被调查。退火的处理在微观结构和样品的磁性上有重要影响。XRD获得的结果显示在温度扔的电影比525敨?祥獥Δ降低

简介：ＥｆｆｅｃｔｏｆＴｗｏ－ｔｉｍｅｓＡｎｎｅａｌｉｎｇｏｎＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆＴｉＮｉＳｈａｐｃ－ｍｅｍｏｒｙＡｌｌｏｙＺｈａｎｇＪｉｎｂｏ，ＳｕｎＸｕ，ＷａｎｇＦｕｓｈｅｎｇａｎｄＨｅＹｏｎｇｊｉａｎ（张金波（孙序）（王福生）（何勇健）...

简介：Ti44Zr32Ni22Cu2和Ti41Zr29Ni28Cu2合金被融化旋转方法准备。阶段结构被X光检查衍射分析，并且融化旋转合金的电气化学的表演被调查。结果显示Ti44Zr32Ni22Cu2合金由icosahedralquasicrystals和非结晶的阶段组成，并且Ti41Zr29Ni28Cu2合金包括了icosahedralquasicrystals，非结晶，并且洗阶段。最大的分泌物能力分别地为Ti41Zr29Ni28Cu2合金是为Ti44Zr32Ni22Cu2合金和181mAh/g的141mAh/g。Ti41Zr29Ni28Cu2合金也显示出更好高率的dischargeability和骑车的稳定性。更好电气化学的性质应该被归功于到Ni的高内容，它对电气化学的运动性质有益并且在Ti41Zr29Ni28Cu2合金使合金更抵抗到氧化，以及到洗阶段，它能作为电镀物品催化剂和微水流的收集者工作。

简介：MgTixNi(x=0,0.1,and0.2)alloysweresuccessfullypreparedbymechanicalalloying(MA),andtheinfluenceofmillingtimeontheelectrochemicalcharacteristicsoftheelectrodeswasdiscussed.MgTixNialloysafter90hmillingdisplayedthebestelectrochemicalperformance.TheX-raydiffractionpatternsshowedthatthealloyball-milledfor90hwasamorphouswithawideneddiffractionpeak.Thecharge-dischargetestsindicatedthatthesealloyshadgoodelectrochemicalactivationproperties,andtheMgTi0.2Nialloyelectrodeexhibitedthebestcycleperformance.TheinitialdischargecapacityoftheMgTi0.2Nialloyreachedupto401.1mAh·g-1,andtheretentionrateofcapacitywas31.0%after30cycles,muchhigherthanthatofMgNi(17.3%).TheTafelpolarizationcurvesrevealedthatTiadditioncouldenhancetheanticorrosionperformanceofthesealloysinalkalisolution,whichwasresponsiblefortheamelioratedcyclicstabilityofthesealloyelectrodes.

简介：Thenon-isothermalleachingkineticsofprimarytitanium-richmaterialbymicrowaveheatingwasinvestigated,andthetemperature-pressurecurvesofleachingsystemandmicrowaveabsorptioncharacteristicsofmixturesolutionsbeforeandafterleachingweremeasured.Theresearchofnon-isothermalkineticswasevaluatedbytheleachingrateofFeandthetotalapparentvelocityequationofthenon-isothermalkineticsofleachingforprimarytitanium-richmaterialbymicrowaveheatingwasobtained.Itisshownfromthetemperature-pressurecurvesthatthehightemperatureandhighpressureofclosedleachingsystemarefavorabletotheenhancementoftheleachingrateofFe.Microwaveabsorptioncharacteristicsofmixturesolutionsbeforeandafterleachingshowthatthereareabruptchangesofmicrowaveabsorptioncharacteristicsfor15%HClsolutionandthemixturesolutionafterleachingby20%HCl.

简介：NanocrystallineMg2Ni-typealloyswithnominalcompositionsofMg20Ni10–xCux(x=0,1,2,3,4,massfraction,%)weresynthesizedbyrapidquenchingtechnique.Themicrostructuresoftheas-castandquenchedalloyswerecharacterizedbyXRD,SEMandHRTEM.Theelectrochemicalhydrogenstorageperformancesweretestedbyanautomaticgalvanostaticsystem.ThehydridinganddehydridingkineticsofthealloysweremeasuredusinganautomaticallycontrolledSievertsapparatus.Theresultsshowthatalltheas-quenchedalloysholdthetypicalnanocrystallinestructureandtherapidquenchingdoesnotchangethemajorphaseMg2Ni.Therapidquenchingsignificantlyimprovestheelectrochemicalhydrogenstoragecapacityofthealloys,whereasitslightlyimpairsthecyclingstabilityofthealloys.Additionally,thehydrogenabsorptionanddesorptioncapacitiesofthealloyssignificantlyincreasewithrisingquenchingrate.

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

简介：SincethelowandmediumgradeoxideoresintheMainandEasternMiningAreasattheBayanOboMinehaveahighgradeofNb2O5andlargeorereservesandarerichinmanyelements,theyareofgreatervaluetouseindevelopmentandrecoverythanotherkindsofniobiummineralsresources.Thedisseminationcharacteristicsandprocessingpropertiesoffourtypesofniobiummineralsaresummarisedandmethodsandresultsofniobiummineralprocessingarealsodescribed.

简介：结构和绝缘的性质(Pb，Sr)有不同Pb和Sr内容的Nb2O6-NaNbO3-SiO2眼镜陶艺被调查。没有Sr替换的眼镜陶艺的XRD模式与Sr替换与那不同，它在后者显示斜方晶的阶段的存在。，TEM明亮的地观察与Sr为样品显示出nanosized微观结构，与分开的使结晶的乐队一起的典型最容易溶解的微观结构在玻璃矩阵被发现。当到Pb的Sr的臼齿的比率是4时，样品的绝缘的性质测量显示绝缘的常数，绝缘的损失，DC地和绝缘的常数的温度依赖的明显的改进?6。

简介：TheeffectsoftheintroductionofCetoLa_(1-x)Ce_xFe_(11.5)Si_(1.5)alloyson1:13phaseformationmechanism,thefirst-ordermagneticphasetransitionstrengtheningcharacteristics,andmagnetocaloricpropertywerestudied,respectively.Theresultsshowthattheformationmechanismsof1:13andLaFeSiphasesinLa_(1-x)Ce_xFe_(11.5)Si_(1.5)alloysarethesameasthoseofCe_2Fe_(17)andCeFe_2phasesinCe–Febinarysystem,respectively.ThesubstitutionofCein1:13phasewhichislimitedcanmakethefirst-ordermagneticphasetransitioncharacteristicsstrengthen,whichcanmakethermalandmagnetichysteresisincrease,thetemperatureintervaloftemperatureinducedphasetransitiondecrease,andthecriticalmagneticfieldoffield-inducedmagneticphasetransition(HC)increase,respectively.Owingtothelatticeshrinkof1:13phasewiththeincreaseinCecontent,theCurietemperatures(TC)showalineardecrease.Themaximumchangeinmagneticentropygraduallyincreasesduetothedecreaseintemperatureintervaloftemperature-inducedphasetransition,buttherelativecoolingcapacitiesareallabout80Jákg-1atmagneticfieldof2T.

简介：InordertoimprovetheelectrochemicalcyclestabilityofLa-Mg-Nisystem(PuNi3-type)hydrogenstoragealloy,NiinthealloyswaspartiallysubstitutedbyM(M=Cu,Al,Mn).AnewLa-Mg-NisystemelectrodealloysLa0.7Mg0.3Ni2.55-xCo0.45Mx(M=Cu,Al,Mn;x=0,0.1)werepreparedbycastingandrapidquenching.Theeffectsofelementsubstitutionandrapidquenchingonthemicrostructuresandelectrochemicalperformancesofthealloyswereinvestigated.TheresultsbyXRD,SEMandTEMshowthatthealloyshaveamultiphasestructure,includingthe(La,Mg)Ni3phase,theLaNi5phaseandtheLaNi2phase.Therapidquenchingandelementsubstitutionhaveanimperceptibleinfluenceonthephasecompositionsofthealloys,butbothchangethephaseabundanceofthealloys.Therapidquenchingsignificantlyimprovesthecompositionhomogeneityofthealloysandmarkedlydecreasesthegrainsizeofthealloys.TheCusubstitutionpromotestheformationofanamorphousphaseintheas-quenchedalloy,andareversalresultbytheAlsubstitution.Theelectrochemicalmeasurementindicatesthattheelementsubstitutiondecreasesthedischargecapacityofthealloys,whereasitobviouslyimprovesthecyclestabilityofthealloys.ThepositiveinfluenceofelementsubstitutiononthecyclelifeofthealloysisinsequenceAl＞Cu＞Mn,andnegativeinfluenceonthedischargecapacityisinsequenceAl＞Mn＞Cu.Therapidquenchingsignificantlyenhancesthecyclestabilityofthealloys,butitleadstoadifferentextentdecreaseofthedischargecapacityofthealloys.