高精度金屬球研制和材料強磁處理研究.pdf

1、中國科學(xué)院電工研究所博士后學(xué)位論文高精度金屬球研制和材料強磁處理研究姓名：王暉申請學(xué)位級別：博士后專業(yè)：電氣工程指導(dǎo)教師：嚴(yán)陸光王秋良20060731Abstract：TherearemainlytwopartsinthispostdoctoralreportmanufactureofmetallicballswithhilghprecisionandstudyofmaterialprocessinhighmagneticfieldsA

2、bstractB：studyofmaterialprocessinhighmagneticfieldsPracticalapplicationsofhighmagneticfieldsinlargescalearepossibleforthedevelopmentandtheadvanceofsuperconductingmagnetandhighmagneticfieldtechnologiesButtheapplicationstu

3、diesofhighmagneticfieldsarerelativelylaggedbehind，whichhasblockedgreatlythedevelopmentofsuperconductingmagnetindustryItisindicatedthattherearelargeapplicationfutureforhighmagneticfieldsinmaterialsprocessandmanyinterestin

4、gnewphenomenaandeffectsinducedbythefieldshavebeenfoundbytheexistingstudiesTheapplicationofahighmagneticfieldonthepreparationof2n6generationhightemperaturesuperconductortapehasbeeninvestigatedinthisstudyAnewprocessingofYB

5、COthickfilmderivedfromchemicalsolutiondepositionmethodassistedbyahighmagneticfieldhasbeenpresentTheoreticallyifthefieldisappliedperpendiculartothetexturedsubstrateplane，thepreferentialformationofcaxisorientednucleimayOCC

6、Urinthefield，andthenonorientedYBCOnucleiunavoidableappearedinthethicksuperconductingfilmcouldberotatedwitllc—axisparalleltothefieldMoreovertheorientedYBCOnucleiwillbeaggregatedalongthedirectionofmagneticfieldbythemagneti

7、cinteractionsbetweenthegrainsTherefore，itishighpromisingtopreparethicktexturedYBCOfilmwithhi【曲criticalcurrentbythismethodExperimentalapparatushavebeenestablishedandsomeexperimentsweretriedKeywords：superconductinghighmagn