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1.
1.IntroductionMultiwalledcarbonnanotubes(MWNTs)werefoundbyoneofthepresentauthors(S.Iijima)〔1〕insidethecathodedeposits,whichwereobtainedbyanotherauthor(Y.Ando)〔1,2,3〕asbyproductsoffullereneproductionusingaDCarcdischargeevaporationininertgas.TheMWNTsc…  相似文献   

2.
1.IntroductionDuringthepastseveraldecadesyears,muchattentionhasbeenfocusedonunderstandingtherelaxationpropertiesandphasetransitionsinstronglycompositionaldisorderedferroelectrics,suchasPb(Mg1/3Nb2/3)O3(PMN),Pb(Sc1/2Ta1/2)O3andLamodifiedPbZr1xTixO3(P…  相似文献   

3.
MOCVDGrowthofQuaternaryGaxIn1-xAs1-ySbyAloys:SolidCompositionZhangBaolin,JinYixin,ZhouTianming,NingYongqiang(张宝林)(金亿鑫)(周天明)(宁永强)JiangHongandLiShuwei(蒋红)(李树纬)ChangchunInstituteofPhysics,ChineseAcademyofSciences,Changchun,130021,ChinaReceived25July199…  相似文献   

4.
1.IntroductionInternalfriction(IF)andultrasonicattenuation(UA)arethedissipationofmechanicalvibratingenergycausedbythereactionofvariousdefectsinmaterialsuponanexternallyappliedalternativestress,whichhavetheadvantageofhighsensitivityandreliabilityinth…  相似文献   

5.
1 INTRODUCTIONDuringthelast15years,thescientificresearchprogramoftheDivisionofmaterialsSciences(DMS)andtheappliedtechnologyprogramsoftheOfficesofEnergyEfficiencyandRenewableEnergy(EE)andofFossilEnergy(FE)havesupportedresearchontheorderedaluminide…  相似文献   

6.
MicrostructureandTransformationonPlatinum(111)FacetsWangLianshanHongHanlie(汪连山)(洪汉烈)(WuhanUniversityofTechnology,Wuhan430070,...  相似文献   

7.
1 INTRODUCTIONToobtainchromiumcoatingbyelectrochemicalprocedure,electrodepositionfromenvironmentallyfriendlyCr(Ⅲ)bathismoreacceptablethanthatfromtoxicCr(Ⅺ)(chromiumacid)bath.Numerousattemptshavebeenmadetodepositchromiumfromitstrivalentstate,howeve…  相似文献   

8.
1IntroductionPulsedlaserdeposited(PLD)diamondlikecarbon(DLC)filmsareveryhardduetothehighenergyionicspeciesintheplumeproduc...  相似文献   

9.
1.IntroductionDevelopmentactivityofcontinuousextrusionprocessleadstotheintroductionofcontinuousextrusioncladdingprocessforthecladdingofsteelwire(ASwire)andthesheathingofsoftcores(fiberopticsandCATV)withaluminum.Thecontinuousextrusioncladdingproces…  相似文献   

10.
ElectrodeProcessofY(Ⅲ)onNickelElectrodeandSurfaceMetallizingZhouChungen(周春根)(UniversityofAeronauticsandAstronauticsBeijing,Be...  相似文献   

11.
1IntroductionRaredispersiveelementsGa,InandTlformthecomplexesofdiferentcoordinatenumber(CN)orcoordinatestructure(CS)withamin...  相似文献   

12.
1.IntroductionTheuniquepropertiesofdiamondlikecarbon(DLC)filmsareattractinganincreasingamountofattentionowingtotheirsmoothsurface,excellenttribologicalpropertiesandadjustableopticalproperties〔1〕.Plasmabasedionimplantation(PBII)techniquehasbeenapromi…  相似文献   

13.
1INTRODUCTIONTheruleofmixture(ROM)usedinmetalmatrixcomposites(MMC),especialyshortfiberreinforcedMMCs(SFRMMCs)isstilunperfect...  相似文献   

14.
国外电焊机发展概况(上)   总被引:4,自引:0,他引:4  
国外电焊机发展概况(上)机械部成都电焊机研究所(610051)易志华Generalsituationofforeignelectricweldingmachines¥(Chengduelectricweldingmachineresearchlnst...  相似文献   

15.
Research,ManufactureandApplicationsofLithiumMetalMaterialsinChinaLanHaicangandZhaoWei(兰海苍)(赵炜)(GeneralResearchInstituteforNon...  相似文献   

16.
1-IntroductionCarbonisaprevailingresidualimpurityinundopedsemiinsulating(SI)GaAscrystalsgrownbytheliquidencapsulatedCzochralski(LEC)technique,anditpredominantlyoccupiesthearsenicsiteasacceptorCAs.Sincethemassofcarbonatomismuchlighterthanthatofars…  相似文献   

17.
1.IntroductionBAS(BaOAl2O3SiO2)glassceramicswithcelsianasmaincrystallinephasearepotentialmatricesofrefractoryfiberorwhiskerreinforcedcompositesduetothehighmeltingpoint(1760℃)andgoodoxidationresistanceofcelsian.Celsianwithmonoclinicstructureisstab…  相似文献   

18.
Presentsituationandfutureofweldingmachineryindustry¥LIJianguoandZHUQi(ChengduElectricWeldingMachineResearchInstitute(610051))...  相似文献   

19.
ThermodynamicAssessmentofDy-CoSystemSuXuping;ZhangWeijingandDuZhenmin(苏旭平)(张维敬)(杜振民)(DepartmentofMaterialsScienceandEngineeri...  相似文献   

20.
ThermodynamicAssessmentofCo-YSystemDuZhenmin;ZhangWeijingandZhaoLiang(杜振民)(张维敬)(赵亮)(DeportmentofMaterialsScienceandEngineerin...  相似文献   

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