共查询到20条相似文献,搜索用时 46 毫秒
1.
LGK系列空气等离子切割机的使用与维修天津大学机电工厂(300072)缪贵宾OperationandRepairofLGKSeriesAirPlasmaCuttingMachine¥(TianjinUniversityMachineryandElec... 相似文献
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切割机中的几种点火方法四川新都焊接设备厂(610500)王忠达IgnitionMannersofCuttingMachineSichuanXinduWeldingEquipmentFactoryWangZhongda空气等离子切割机在机械加工中的作用... 相似文献
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Q.F.Fang Laboratory ofInternal Friction Defectsin Solids Institute of Solid State Physics The Chinese Academy of Sciences Hefei China 《金属学报(英文版)》1999,12(4):573-577
1.IntroductionInternalfriction(IF)andultrasonicattenuation(UA)arethedissipationofmechanicalvibratingenergycausedbythereactionofvariousdefectsinmaterialsuponanexternallyappliedalternativestress,whichhavetheadvantageofhighsensitivityandreliabilityinth… 相似文献
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F.Gao B.Y.Song C.B.Jia Y.H.Wang Department of Material Science Engineering Dalian Railway Institute Dalian China 《金属学报(英文版)》1999,12(5):802-806
1.IntroductionDevelopmentactivityofcontinuousextrusionprocessleadstotheintroductionofcontinuousextrusioncladdingprocessforthecladdingofsteelwire(ASwire)andthesheathingofsoftcores(fiberopticsandCATV)withaluminum.Thecontinuousextrusioncladdingproces… 相似文献
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MARTENSITE LIKE PHASE TRANSITIONS DUE TO POLAR REGION STRUCTURE IN DISORDERED FERROELECTRIC CERAMICS
H.Q.Fan L.T.Zhang State Key Lab. of Solidification Processing Northwestern Polytechnical University Xi'an China 《金属学报(英文版)》1999,12(5):1099-1105
1.IntroductionDuringthepastseveraldecadesyears,muchattentionhasbeenfocusedonunderstandingtherelaxationpropertiesandphasetransitionsinstronglycompositionaldisorderedferroelectrics,suchasPb(Mg1/3Nb2/3)O3(PMN),Pb(Sc1/2Ta1/2)O3andLamodifiedPbZr1xTixO3(P… 相似文献
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X.L.Zhao) T.L.Guo) M.Ohkohchi) T.Okazaki) S.Iijima Y.Ando) ) Japan Science Technology Corporation Department of Physics Meijo University Shiogamaguchi Tempaku ku Nagoya Japan ) Scientific Research Department Sh 《金属学报(英文版)》1999,12(4):345-352
1.IntroductionMultiwalledcarbonnanotubes(MWNTs)werefoundbyoneofthepresentauthors(S.Iijima)〔1〕insidethecathodedeposits,whichwereobtainedbyanotherauthor(Y.Ando)〔1,2,3〕asbyproductsoffullereneproductionusingaDCarcdischargeevaporationininertgas.TheMWNTsc… 相似文献
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J.M.Yang J.C.Lei J.P.Li P.Cheng Dept. Mater.Sci.and Eng. Xi'an Institute of Technology Xi'an China 《金属学报(英文版)》1999,12(5):1130-1135
1.IntroductionBAS(BaOAl2O3SiO2)glassceramicswithcelsianasmaincrystallinephasearepotentialmatricesofrefractoryfiberorwhiskerreinforcedcompositesduetothehighmeltingpoint(1760℃)andgoodoxidationresistanceofcelsian.Celsianwithmonoclinicstructureisstab… 相似文献
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1-IntroductionCarbonisaprevailingresidualimpurityinundopedsemiinsulating(SI)GaAscrystalsgrownbytheliquidencapsulatedCzochralski(LEC)technique,anditpredominantlyoccupiesthearsenicsiteasacceptorCAs.Sincethemassofcarbonatomismuchlighterthanthatofars… 相似文献
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Alan L. Dragoo Division of Materials Sciences Office of Basic Energy Sciences U.S.Department of Energy Germantown MD - U.S.A. 《中国有色金属学会会刊》1999,(Z1)
1 INTRODUCTIONDuringthelast15years,thescientificresearchprogramoftheDivisionofmaterialsSciences(DMS)andtheappliedtechnologyprogramsoftheOfficesofEnergyEfficiencyandRenewableEnergy(EE)andofFossilEnergy(FE)havesupportedresearchontheorderedaluminide… 相似文献
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G.Li L.F.Xia X.X.Ma Y.Sun Z.J.Zhan Schoolof Materials Science Engineering Harbin Institute of Technology Harbin China 《金属学报(英文版)》1999,12(4):551-556
1.IntroductionTheuniquepropertiesofdiamondlikecarbon(DLC)filmsareattractinganincreasingamountofattentionowingtotheirsmoothsurface,excellenttribologicalpropertiesandadjustableopticalproperties〔1〕.Plasmabasedionimplantation(PBII)techniquehasbeenapromi… 相似文献
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ElectrodeProcessofY(Ⅲ)onNickelElectrodeandSurfaceMetallizingZhouChungen(周春根)(UniversityofAeronauticsandAstronauticsBeijing,Be... 相似文献
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Chen Zhang a Paul Thoma b Bryan Chin a Ralph Zee a a Materials Engineering Program Auburn University AL U.S.A. b Johnson Controls Inc. Milwaukee WI U.S.A. 《中国有色金属学会会刊》1999,(Z1)
1 INTODUCTIONShapememoryalloys(SMAs)areexcellentcandidatesforcontrolsystemsandarecommonlyreferredtoas“smart”materialsduetotheirabilitytochangeshapewithtemperature.Thesealloyscanalsogeneratesignificantamountsofstrain(andstress)andareidealforuseinact… 相似文献
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Chen Lei 《中国有色金属学会会刊》1999,9(3):2
1 INTRODUCTIONToobtainchromiumcoatingbyelectrochemicalprocedure,electrodepositionfromenvironmentallyfriendlyCr(Ⅲ)bathismoreacceptablethanthatfromtoxicCr(Ⅺ)(chromiumacid)bath.Numerousattemptshavebeenmadetodepositchromiumfromitstrivalentstate,howeve… 相似文献
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Y.Z. Luo D.Y. Yu Z.M. Xu Y. Luo G.T. Qi J.L. Yang Departent of Chemistry Huazhong University of Science Technology Wuhan China 《金属学报(英文版)》1999,12(5):936-939
1.IntroductionDueto6%(vol.)CO2,H2S(approximately150mg/m3)andwatervaporcontainedinaccompanyinggasofcrudeoilatproductingliquefiedgasandlightoil,pipescorrosionareseriousafterseveralyears’running.Especiallywhentherearecondensatewaterandoilsludgeremaini… 相似文献
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李建国 《稀有金属(英文版)》1995,(3)
ElectronicTheoryofThermodynamicAdhesioninMetal/CeramicSystemsLiJian'guo(李建国)(InstitutfurNichtmetallischeWerkstoffe,TchnischeU... 相似文献
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1IntroductionPulsedlaserdeposited(PLD)diamondlikecarbon(DLC)filmsareveryhardduetothehighenergyionicspeciesintheplumeproduc... 相似文献
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1.IntroductionTheheataffectedzoneisinhomogeneous,themicrozonesofwhichhavegreatdifferenceincomposition,microstructure,grainsizeandperformance.ToughnessdeteriorationinHAZofHSLAsteelmainlytakesplaceinthecoarsegrainedzone(CGHAZ),theintercriticalzone(I… 相似文献
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1IntroductionRaredispersiveelementsGa,InandTlformthecomplexesofdiferentcoordinatenumber(CN)orcoordinatestructure(CS)withamin... 相似文献
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Xu Xiaojing 《中国有色金属学会会刊》1999,9(3)
1 INTRODUCTIONSomefineceramicwhiskerorparticlereinforcedaluminummatrixcompositescanexhibitatotalelongationof200%~600%atahighstrainrate(>10-2s-1)[1~8].Thehighstrainratesuperplasticity(HSRS)isveryattractiveforcommercialapplicationsbecauseoneofthemaj… 相似文献
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1-IntroductionBoroncarbidereinforcedaluminacomposites(Al2O3/B4C)haveimprovedflexuralstrengthandfracturetoughnessoverthealuminaceramic[1].Moreover,sincebothboroncarbideandaluminahavelowdensities(2.51and3.98g/cm3,respectively),theresultingcomposite… 相似文献