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1、中南民族大学硕士学位论文锻铝微弧氧化过程控制问题的研究姓名：胡鹏申请学位级别：硕士专业：等离子体物理指导教师：危立辉20070101锻铝微弧氧化过程控制问题的研究ABSTRACTAluminumhasbeenbroadlyusedintheengineeringfieldduetoitsbroadreserves,lowdensity,greatintensityandexcellentperformanceinextrusionprocessamongallthemetalmaterials.However,thecrucialdisadvantagesofalumi
2、numareitssoftness,easytowearandeasytobecorrodedinthemedium,whichleadtothefailureoftheproducts.Theoxidizedcoatinginthetraditionalcoatingtechnology,i.e.anticathode-oxidation,chemistry-oxidation,istoalargeextentrelativelythin,lowerinhardness,andsomeprocesstechnologyevencauseaseverepollution
3、totheenvironment,whichisnolongerfeasibletothepracticalapplication.Microarc-oxidizationisadepositiontechnologyofplasmaelectrolysis,acoatingtechnologywhichproducestheceramiccoatinginthesurfaceofnon-ferrousmetalssuchasaluminum,magnesium,titaniumanditsrespectivelyalloymaterialsviathejointrea
4、ctionofhighpressureelectricitydischargeandelectrochemistryoxidationinanelectrolytecontainedcertainion.Itbreaksthroughthevoltagelimitoftraditionalanticathode-oxidationandobtainstheideaceramiccoatinginthesurfaceofthesaidmetalsviathestrengtheningreactionofhighpressureelectricitydischarge.Mi
5、croarc-oxidizationtechnologyisatechnologyofsimpleproductprocess,non-pollutionandhighcapacityofprocessingworkpiece,whichgreatlyimprovedtheperformanceofaluminumanditsalloyandleadtotheperfectcombinationofthesecond-generationengineeringmaterials(metal)andthethird-generationengineeringmateria
6、ls(ceramic),whichisaverypromisinglightalloycoatingtechnology.Duetothedifficultiesintheresearchofthetechnicsmechanismofmicroarc-oxidization,thedevelopmentoftheresearchofindustrializationapplicationofmicroarc-oxidizationtechniquesandthehigh-powerelectricalsourcethatgoeswithalargescaleindus
7、trializationandautomaticproductionlineisslow.Thispaper,onthebasisofmicroarc-oxidizationpowersupplywhichwasdevelopedbyourlaboratory,carriesouttheautomaticcontrolofforgedaluminummicroarc-oxidizationtechnicsviacontrolledcircuitandadjustmentofsoftwarebyusingofPIC16F788Asingle
