激光刻痕降低取向硅钢铁损技术分析

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1、东北大学硕士学位论文Abs仃acthigherorientation，thelowercorelossafterlaserirradiation；theresidualshearstressmayreducetheeffectofthelaserirradiationobviously．(4)Bylaserirradiationonseveralteamsofsamples，thispaperhasstudiedthebetterprocessparameters．Thevelocityisupto1000mm／s，an

2、dtheaveragereductionofthistechnologyisupto7．58％，decreasingthesamples’corelossfrom1．478W／kgto1．35W／kg．Accordingtothebettertechnologicalparametersinthispaper,amodelfortestequipmenthasbeenputf0刑砌．andthismodelcanbeusedforthedesignoftheequipment．(5)Usingchemicalcorros

3、ionandlaserirradiation，thispaperhasstudiedheat-proofdomainrefinementtechnology,andtheexperimentalresultisexcellent．Accordingtothecomparativeexperimentresult，thesamples’thecorelosstreatedbythistechnologycanbereducedafterannealing，theaveragecorelossisabout1·170W／kg

4、，whiletheaveragecorelossofthesamplesthatdidn’tbetreatedbythistechnologyisabout1．261W／kg．so，thedomainrefinementhasheatproofproperties，andtheaveragereductionisabout7．22％．Keywords：grainorientedsiliconsteel，eddycurrentloss，laserirradiation，heat-proof,testequipment东北大

5、学硕士学位论文目录目录独创性声明⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．I摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IIAbstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．III第l章绪论⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1研究背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．11．1．1取向硅钢需求状况⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯11．1．2取向硅钢及其铁损研究⋯⋯⋯⋯⋯⋯⋯⋯⋯

6、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21．2细化磁畴降低铁损基本原理与技术⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．31．2．1铁损及其影响因素⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯31．2．2初始磁畴形成机理⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯51．2．3磁畴细化机理与方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯81．2．4激光刻痕技术发展现状与趋势⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一111．3取向硅钢磁畴显示⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯121．3．1取向硅钢磁畴显示方法⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．121

7、．3．2磁流体制备问题与解决⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．131．4研究目的及内容⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯14第2章磁畴显示机理与磁流体配制研究⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．152．1磁流体显示磁畴机理⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯152．1．1磁流体的构成及磁性⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．152．1．2磁流体显示磁畴机制⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一162．2磁流体配制⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯172．2．1反应机理与试剂

8、用量⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯一172．2．2四氧化三铁制备⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．172．2．3磁流体制备⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．182．2．4检测分析⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯．．192．3新型磁流体磁畴显示效果与特点⋯⋯⋯⋯⋯⋯⋯