共查询到20条相似文献,搜索用时 31 毫秒
1.
SynthesisandCharacterizationofHeteropolyComplexesofIndiumwithMetal-centredUndecatungstateLigandsWuQingyin(吴庆银)(LiaoningUniver... 相似文献
2.
Electrochemical and Kinetic Behavior of Ni(Ⅱ)Ion in DMF 总被引:2,自引:0,他引:2
1IntroductionThenickelaloysandcomplexesarewidelyusedasmagnetic,optical,nuclearandsuperconductingmaterials[1,2].Manynickelcom... 相似文献
3.
SynthesisandPropertiesofMolybdotungstogallicHeteropolyComplexesWuQingyinandSongYulin(吴庆银)(宋玉林)(DepartmentofChemistry,Liaoning... 相似文献
4.
1 INTRODUCTIONItiswellknownthatthesolidlubricationmate rialscommonlyusedathightemperatures ,lowtem peraturesor(and)invacuumare graphite ,metallicsulphideMX2 (whereMstandsforWandMo ,XforS ,SeandTe) ,C60 andetc .Thegoodlubricationpropertyoftheseconventionalsolidlu… 相似文献
5.
《金属学报(英文版)》1995,(Z1)
U.S.A.U.S.DepartmentofEnergyResearchinIntermetallicAlloysandComposites¥AlanL.Dragoo(DivisionofMaterialsSciencesOfficeofBasicE... 相似文献
6.
1 INTRODUCTIONAsparticlereinforcedmetalmatrixcomposites(PRMMC’s)withimprovedspecificmodulus,spe cificstiffnessandstrengthhavebecomeavailableatreasonable prices,theybecomeattractivefortheautomotiveandaerospaceindustries primarilyasameansofsavingmassand ,he… 相似文献
7.
I.Vosoughi Niri 《中国有色金属学会会刊》2001,(4)
1 INTRODUCTIONMassandchemicalchangetechniquesareusedinexplorationfields .The procedureutilizeselementswithhighdegreeofimmobilityinhydrothermalandassociatedinteractivefluid rocksystems .Theseele mentsnotablyZr ,TiO2 ,Y ,Sc ,Nb ,REEandAl2 O3 arehighlyimmobileduri… 相似文献
8.
1 INTRODUCTIONMechanicalactivationiswidelyappliedinen hancingmetallurgicalprocess[1~ 3] andchemicalsyn thesis[4 ,5] .Sofaritisdifficultt 相似文献
9.
曹鹏 《中国有色金属学会会刊》2000,10(6)
1 INTRODUCTIONMagnesiumalloys ,especiallyMgmatrixcom posites ,areexcellentcandidatesforengineeringlightstructuralmaterialsbecauseoftheirhighspecificstiff nessandspecificstrength ,gooddimensionalstabilityandhighdampingcapacity .Thus ,Mgalloysareex pectedinad… 相似文献
10.
1 INTRODUCTIONTheweatheringcrustelution depositedrareearthoreisakindofrichrareearthresource[1] .Therareearthintheweatheringcrustelution depositedrareearthoremainlyexistswiththeion phasead sorbedonclayminerals[2 ] ,andcanbeleachedbyion exchangemethod[3] .Manyind… 相似文献
11.
1 INTRODUCTIONRecentlyaluminum raremetalalloysattractmuchinterest.Metallicthermoreduction ,inwhichoxidesandchloridesofraremetalarereducedandin situalloyedbyaluminum ,hasthebestprospectinallproductionmethodsofaluminum raremetalalloys .Howeverthismethodismo… 相似文献
12.
1 INTRODUCTIONNanometeralloypowdersareexpectedtopossessnovelproperties ,whichcannotbeobtainedin puremetalnanometerpowdersandconventionalbulkma terials[1,2 ] .Manyinvestigationsonthe preparationandpropertiesofnanometeralloypowdershavebeencarriedout.Severalte… 相似文献
13.
Formation regularity of phases in nanometer powders of Al-Fe alloy prepared by gas evaporation 总被引:3,自引:0,他引:3
1 INTRODUCTIONNanometeralloypowdersareexpectedtoexhibituniquecharacteristicswhichcannotbeobtainedforpuremetalpowdersandconventionalmaterials .Morerecently ,aseriesofstudiesonthepreparationtech niqueandpropertiesofnanometerpowderswerecar riedout,severalpr… 相似文献
14.
Effects of milling and active surfactants on rheological behavior of powder injection molding feedstock 总被引:2,自引:0,他引:2
INTRODUCTIONPowderinjectionmolding (PIM )fitsespeciallyformanufacturingcomplexshapedpartsofcertainal loyswithhighperformance[1 ] .However,duetotheagglomeratedirregularshape,fineparticlesize,highinnerporesandspecificsurfaceareaoftheinitialtungstenpowder,the… 相似文献
15.
ProcessDevelopmentAspectsofAluminium-TitaniumMasterAlioysKrishnanT.S.;RajagopalanP.K;andBoseD-K.(Metallurgy.Division,BhabhaAt... 相似文献
16.
Developing new reagent for selectively precipitation of molybdenum from tungstate solution 总被引:2,自引:0,他引:2
1 INTRODUCTIONMolybdenumandtungstenshowverysimilarchemi calpropertiesowingto :1)theyarealllocatedattheⅥBcolumnintheperiodictableofelementsand 2 )the“lan thanidecontraction”makestheradiiofMo6+ andW6+(Zr4 + andHf4 + ,Nb5+ andTa5+ )almostequaltoeachother .Thisbringsabou… 相似文献
17.
GDH─36型钢筋电渣压力焊机的工作原理及应用PrinciplesandApplicationsofBarElectroslagButtWelderModerGDH—36ShenyangNo2ElectricWeldingMachineWorks(l... 相似文献
18.
RamanStudyofDefectsinSI-GaAsandSe-dopedEpitaxialLayerIrradiatedby10MeVElectronsWuFengmei,LiHaifeng,ChenWuming,ChengGungxuandH... 相似文献
19.
石忠民 《中国有色金属学会会刊》2000,10(1)
1 INTRODUCTIONItiswellknownthatalloftheclassicalphysicstheoriesandmostofthemodernonesrespectivelyobeythethreesymmetryreferredtoasC (charge) ,P (parity)andT (time) ,andsomecombinedsym metrysuchasCPandCPT[1,2 ].LerchsandGross mannhaveusedafreemechanicalsystemtoil… 相似文献
20.
luminothermicReductionofK2ZrF6forPreparationofAlZrMasterAloyRajagopalanP.K.,SharmaI.G.andKrishnanT.S.MaterialsProcesingDivis... 相似文献