简介：Themorphology,structureanddistributionoftherareearthcompoundsintheYG8R.YT5RandYT14Rcementedcarbideswithadditionsoftracelightrareearthswerestudiedwithananalyticalelectronmicroscope.TheparticlesoftherareearthcompoundsinthesealloysareallsphericalanddistributeatinterfacesbetweentheCo-cementphaseandWChardphaseor（TiW）Csolidsolution,andinthe（TiW）Csolidsolution.IntheYG8RandYTI4Ralloys,therareearthcompoundisRE2O3withabccstructure,whileintheYT5Ralloy.therareearthcompoundisRE2O2Swithahcpstructure.

简介：大约90?没有全面利用，%稀土元素矿物质和许多另外的珍贵矿物质作为铁跟踪是heaped。为了包括地恢复这些珍贵矿物质，在Baotou钢跟踪和嵌入的特征的珍贵矿石类型的一个看法，珍贵部件流动和他们在beneficiation程序表联合关系的各自的恢复被分析；能把考虑给四种部件的进程流动和参数是坚定的。TFe，稀土元素氧化物(REO)，铌和荧石恢复能到达72.70%，81.84%，78.58%并且60.18?在low-intensity/high-intensity的%磁性的分离分别地。高紧张的磁性的集中被REO直接筹款对待；恢复是75.43?%，在Fe能与Nb完全被分开的底上。underflow被减小roasting-low-intensity对待磁性的分离。并且在这些珍贵部件的恢复之间的关系也被讨论。

简介：InBaotourareearthtailingsore,thegradeofrareearthisclosetothatoftheraworenearly.Therareearthsarediscardedintailingsdamcausedbyaseriouswasteofresources.Firstofall,thedecompositionproductsofbastnaesite-andmonazite-mixedrareearthtailingsinCaOinreducingatmospherewerestudiedbymeansofX-raydiffraction(XRD).TheresultsshowthatthenormalproductsareCeO_2,Ce_2O_3,Ca_5F(PO_4)_3,andCe_(0.75)Nd_(0.25)O_(1.875),andtherearenoREPO_4andREFCO_3.Secondly,theroastedproductwasextractedinHCl,andtherelationshipamongroastingtime,roastingtemperature,CaOaddition,andextractiontemperaturewasstudiedbythequadraticregression-orthogonalanalysis.Throughanalysis,theoptimumprocessconditionsofmixedrareearthtailingsextractedareobtainedasfollows:roastingtimeof60min,roastingtemperatureof800℃,CaOadditionof30%,extractiontemperatureof80℃,andextractionratioof99.18%.

简介：基于密度，功能的理论(DFT)和投影机扩充了的精力充沛的计算挥动的Abinitio为决定lanthanidesesquioxidesLn_2O_3的多型性的方法(爪)(在哪儿行=稀土元素的元素，Y，和Sc)，LnMO_3perovskites(在哪儿M=AlandGa)，并且Ln_2B_2O_7pyrochlores(在哪儿B=Ti，Zr，和Hf)被报导。除了theC类型Ln_2O_3，相对latticest能力与立方的结构，计算全部的精力为是更加更否定的与非常估计的结果或试验性的结果同意了很好。随Ln~(3+)阳离子半径的增加，多态的结构显示出果汁饮料生产趋势。第三的氧化物陶艺的形成的热含量的趋势和数量从他们相当适合于的成分二进制代码氧化物综合了可得到的试验性的结果，和珍贵热力学的性质被负担得起到化合物，没有试验性的数据为是可得到的。两perovskitesandpyrochlores的形成的热含量趋于随Ln~(3+)阳离子半径的增加变得更否定。

简介：1ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓｔｒｕｃｔｕｒｅａｎｄｅｌｅｃｔｒｏｃｈｅｍｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆｎｉｃｋｅｌｈｙｄｒｏｘｉｄｅｈａｖｅｂｅｅｎｓｔｕｄｉｅｄｅｘｔｅｎｓｉｖｅｌｙｄｕｅｔｏｉｔｓｉｍｐｏｒｔａｎｃｅａｓａｃｔｉｖｅｍａｔｅｒｉａｌｓｉｎｎｉｃｋｅｌｂａｔｔｅｒｙｓｙｓｔｅｍｓ[1].Ａｆｕｎｄａｍｅｎｔａｌｕｎｄｅｒｓｔａｎｄｉｎｇｏｆｔｈｅｅｆｆｅｃｔｓｏｆｍｅｔａｌｌｉｃａｄｄｉｔｉｖｅｓａｎｄｉｍｐｕｒｉｔｉｅｓｏｎｔｈｅｎｉｃｋｅｌｈｙｄｒｏｘｉｄｅｅｌｅｃｔｒｏｃｈｅｍｉｓｔｒｙｃｏｕｌｄｂｅｏｆｇｒｅａｔｖａｌｕｅｔｏｔｈｅｂａｔｔｅｒｙｉｉｎｄｕｓｔｒｙ[2].Ｔｈｅｐｒａｃｔｉｃａｌｉｍｐｏｒｔａｎｃｅｏｆｎｉｃｋｅｌｈｙｄｒｏｘｉｄｅｅｌｅｃｔｒｏｃｈｅｍｉｓｔｒｙｉｓｎｏｔｌｉｍｉｔｅｄｔｏｂａｔｔｅｒｙａｐｐｌｉｃａｔｉｏｎｓ.Ｎｉｃｋｅｌｈｙｄｒｏｘｉｄｅｅｌｅｃｔｒｏｄｅｓａｌｓｏｃａｎｂｅｕｓｅｄｉｎｗａｔｅｒｅｌｅｃｔｒｏｌｙｓｉｓ[3].Ｔｈｅｕｓｅｏｆｍｅｔａｌｌｉｃａｄｄｉｔｉｖｅｓｔｏｍａｎｉｐｕｌａｔｅｔｈｅｅｌｅｃｔｒ...

简介：Rareearthelementgadolinium-dopedaluminum–zincoxide(Gd–AZO)semiconductorthinfilmmaterialwasdepositedonbothsiliconandglasssubstratebyradiofrequency(RF)sputteringatroomtemperature.ElectricalpropertiesandmicrostructureofGd–AZOthinfilmweremainlymodulatedbyalteringO2partialpressure(OPP)duringtheRFsputteringprocess.Scanningelectronmicroscope(SEM)andX-raydiffraction(XRD)testwerecarriedouttouncoverthemicrostructurevariationtrendwiththesputteringOPP,andamorphousstructurewhichisbeneficialtolargemassindustrymanufacturewasalsodemonstratedbytheXRDpattern.TransmittanceinvisiblelightspectrumimpliesthepotentialapplicationforGd–AZOtobeusedintransparentmaterialfield.Finally,bottomgate,topcontactdevicestructurethinfilmtransistors(TFTs)withGd–AZOthinfilmastheactivechannellayerwerefabricatedtoverifythesemiconductoravailabilityofGd–AZOthinfilmmaterial.Besides,theGd–AZOTFTsexhibitpreferabletransferandoutputcharacteristics.

简介：Aluminum,themainimpurityinthelixiviumofweatheredcrustelutiondepositedrareearthore,notonlyresultsinanincreasingconsumptionofprecipitantintherareearthprecipitationprocess,butalsolowersthepurityoffinalrareearthproduct.Aluminumintheweatheredcrustelution-depositedrareearthorelixiviumshouldberemoved.Neutralizinghydrolysismethodwasemployedtoremovealuminumfromthelixivium.HexamethylenetetraminewasfoundtobetheoptimumpHregulatorfortheremovalofaluminuminthelowconcentration.WhenusedtoadjustthepHvalueofthelixiviumto5.0,aluminuminthelixiviumcanbeeffectivelyremovedintheformofaluminumhydroxideprecipitationwithremovalrateof97.60%.Itshowsthathexamethylenetetraminehasagoodeffectontheremovingofaluminumionsfromthelowconcentrationlixivium.Moreover,hexamethylenetetramineinremovingaluminumfromlixiviumhaslittleadverseeffectontheREprecipitationprocess.

简介：Luminescentpolystyrenemicrosphereswereeasilyfabricatedfrompoly(styrene-co-methacrylicacid)andaqueousRE(III)chloridesolution(RE=Eu,Tb)inthepresenceof2,20-bipyridineassecondligand.Thenegativechargesofcarboxylgroupsonthesurfaceofmicrospherescoordinatedwithrareearthionsatfirst,suchascomplexescovalentlylinkedto2,20-bipyridine,resultinginstrongphotoluminescence.Variousmethods,includingtransmissionelectronmicroscope(TEM),scanningelectronmicroscope(SEM),energydispersivespectroscopy(EDS),Fouriertransforminfraredspectroscopy(FT-IR),andfluorescencespectrophotometer,wereusedtocharacterizetheresultantpolystyrenecompositemicrospheres.Thisworkhighlightstheideathatitisfaciletosynthesisluminescentmicrospheresbysurface-modifiedmethoddirectly.