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1.
金属Zr的电子结构和物理性质   总被引:1,自引:1,他引:0  
依据OA 理论确定hcp αZr 的电子结构为[Kr](4dn)0 .3968(4dc)2 .1428(5sc)1 .2620(5sf)0 .1984 , 并计算了它的势能曲线、晶格常数、结合能、弹性和热膨胀系数随温度的变化。另外, 还对其bcc 结构和fcc结构初态特征晶体和初态液体的电子结构进行了研究。  相似文献   

2.
1 INTRODUCTIONMicrowaveplasmaisformedbyexciteddeposi tiongasintheactionofmicrowaveenergy .Electronsviolentlyvibrateundertheactionofahighfrequencyelectromagneticfieldwhichgreatlypromotesthecolli sionamongatoms ,radicalsandmolecules[1] ,thustheionizationdegr…  相似文献   

3.
Separation of Impurity Vanadium from TiCl4 by Means of Adsorption   总被引:1,自引:0,他引:1  
ntroductionTitaniumtetrachlorideisanimportantintermediatematerialforproducingmetalictitaniumandrelevantchemicalproducts.Conse...  相似文献   

4.
1.Introductionγaluminamembraneisoneoftheimportantinorganicmembranesandcanbeusedforvariousliquidseparationprocessesinchemicalengineering,foodprocessing,pharmaceuticindustry,environmentalengineering,biologicalengineeringandforthematerialofinorganicco…  相似文献   

5.
1.IntroductionAluminaceramicsisonekindofadvancedceramicsusedwidelyinvariousfieldssuchaselectronicindustry,mechanicalindustry,andchemicalindustryandbiomaterialsaspect.Thepreparationofnanoaluminaceramicsisoneofthehotsubjectsofscientificresearchasthe…  相似文献   

6.
郭小勇 《钢管》1994,(1):37-40,44
简介了国内各类新型轧管机的现状。较全面分析了鲁宝钢管厂的φ114mmAccuRoll轧管机组的性能、特点、存在的问题及其解决的可能性。指出AccuRoll轧管机可作为我国中小型无缝钢管轧机技术改造的优选机型。  相似文献   

7.
1IntroductionInthetraditionalconceptsofscanningelectronmicroscopy,itisusualythoughtthatsecondaryelectronsaresensitivetorugg...  相似文献   

8.
1.IntroductionWettabilitybetweenceramicandmetalisaveryimportantaspectoftheresearchanddevelopmentofCeramic/MetalComposites(CMC),whichhasagreateffectonthemicrostructureandpropertiesofCMC.Howevertheclassictheoryandmethoddidn’tshowtheinnerconnectionofco…  相似文献   

9.
淬火介质冷却曲线的判读和评价   总被引:11,自引:3,他引:8  
1前言1995年5月1日,国际标准组织(ISO)颁布了淬火油冷却特性测定方法《IndustrialquenchingoilsdeterminationofcoolingcharacteristicsNickelaloyprobetestmeth...  相似文献   

10.
最近美国波音公司的研究开发支柱企业——波音 Phantom工厂与能源部签订了利用高温超导轴承的飞轮储能装置协议.在这个750万美元的项目中,能源部出资370万美元,另外包括四家私人公司,即IntermagneticsGeneral,Praxair Specialty Ceramics,MesOscopicDevices和Ashman Technologies.其中PraxairSpecialty  Cerarnics公司提供制备块样的超导粉末,Mesoscopic Devices负责设计飞轮用脉冲管制…  相似文献   

11.
1.IntroductionMuchworkhasbeendoneontheeffectsofmicroalloying〔14〕,solidsolutionandagingtreatment〔2,46〕,andgrainboundaryprecipitation〔2,4,7〕onelevatedtemperaturemechanicalpropertiesofrefractoryalloys.Tomeasurecomplexmechanicalpropertiesofarefractor…  相似文献   

12.
1IntroductionTherelativelynewmetastableβtitaniumalloy(β21S)hasfoundincreasingapplicationsinaerospaceprograms,especiallyinmetalmatrixcompositesinfuturehypersonicvehiclesforitsattractivecombinationofproperties.Theβ21Salloyisstripproducible,coldr…  相似文献   

13.
Research on Metal Hydride Compressor System   总被引:1,自引:1,他引:0  
ntroductionMetalhydrideisakindoffunctionalmaterialthatcanachieveenergyconversion.Thehydrogenabsorptionstaticcompresor(MHcom...  相似文献   

14.
Intheearlyof1960′s,withthedevelopmentofepitaxialtechniques,manydifficultproblemsintheproductionofsemiconductormaterialsandoptoelectronicdeviceshavebeensolvedsuccessfully,andtheirpropertieshavebeenimprovedenormously.Theepitaxialtechniqueshavebecomethemost…  相似文献   

15.
1.IntroductionSinceratchetingbehavioristheacumulationofsecondarydeformationproceedingcyclebycycle,itisnoteasytodescribeitacc...  相似文献   

16.
1IntroductionOverthepastfewyears,intensiveworkhasbenmadetoachievemulticolororfulcolorthinfilmelectroluminescence(EL)device...  相似文献   

17.
Electric Double layer Capacitor Based on Activated Carbon Material   总被引:1,自引:0,他引:1  
1 IntroductionElectrochemicalcapacitorsareuniqueenergystoragedevices ,whichexhibit2 0to2 0 0timesgreatercapacitancethanconven tionalcapacitors .Electrochemicalcapaci torscanbesimplyclassifiedintotwomaincategories:electricdouble layercapacitors(EDLCs) ,whichmain…  相似文献   

18.
采用一个Mo-Fe-Ni-Co四元扩散偶试样,测定了Mo-Fe-Ni和Mo-Ni-Co在1200℃时的两个三元系等温截面;并借助金相显微镜、扫描电镜能谱仪以及电子探针,确定了Mo-Fe-Ni三元系在1200℃时三元合金中三元化合物P相的存在。该系统中存在bcc(Mo)、μ-Fe7Mo6、δ-MoNi、bcc(Fe)、fcc和P六个单相区;在Mo-Ni-Co三元系中存在bcc(Mo)、δ-MoNi、μ-Co7Mo6和fcc四个单相区。  相似文献   

19.
1 INTRODUCTIONSrTiO3 basedmultifunctionceramicsisakindofnewsemiconductorceramicswiththedualfunctionsofceramicsgrain boundary layer(GBL)capacitorofhighcapacitanceandvaristor,whichexhibitsconsid erablevalueoffurtherresearchandremarkablepoten tialofbeingwide…  相似文献   

20.
1.IntroductionTheresearchonthemagnetoresistanteffecthasrecentlybecomeaheatedpointinthefieldofmaterialresearch.Researchontheapplicationofmagnetoresistanceeffecttendstoberatheractivewhilethebasicresearchandtheoreticprobeareenforced.Thereadingheadforthe…  相似文献   

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