超声波对铝阳极氧化工艺及膜层性能的影响

255Electroplating&FinishingVol.25No.5:2005-09-27:(02JJY2084):(1982-),,,,:,(Email)[e-mail],(Tel)0731-8821874,,,,(,410082):,,,,,,:;;:TG176;TQ153.6:A:1004-227X(2006)04-0042-03Influencesofultrasoniconanodeoxidationtechnicsofaluminumandpropertiesofoxidefilms//LUOPeng,ZHOUHai2hui,ZHANGPing,JIANGHai2dong,KUANGYa2feiAbstract:Theultrasonictechnicswasappliedtoanodeoxi2dationofaluminum.Theinfluencesofultrasoniconanodeoxidationcurves,electrolyticprocessparametersandoxidefilmpsmorphologywerestudied.Theresultsshowthatultra2soniccanimprovefilmpsgrowthrateandupperlimitvalueofoxidationtemperatureandcurrentdensity.Comparingwiththeoxidefilmpreparedwithoutultrasonic,undertheactionofultrasonicithasalowerporosity,andeventhickness,andthefilmpsthicknessandmicro2hardnessareincreasedremarkably.Keywords:aluminum;anodeoxidation;ultrasonicFirst2authorpsaddress:CollegeofChemistryandChemicalEngineering,HunanUniversity,Changsha410082,China1[1-5],,[6-7],,,,20,,2L1,30mm40mm1mm,[w(NaOH)=25%,w(NaNO3)=20%,(CoSO4)=015g/L,7580],:w(H2SO4)=15%,[(COOH)22H2O]=15g/L,(Al3+)=1g/LJCP12(),200kHz,400WDLSB25/20(),(TIME)CTG210;HVS21000(0149N,20s,400)(),3;JEOLJSM26700LV331130s0JA=5A/dm2,30s1AB,w(H2SO4)=15%,[(COOH)22H2O]=15g/L,2420065Electroplating&Finishing(Al3+)=1g/L,JA=5A/dm2,=151,220V;,60min26V,,,,,JA=5A/dm260min,,;,30min1Figure1Relationshipbetweenoxidationvoltageandtime3123121123,JA=8A/dm2,t=30min:,,,,,,,,,,8A/dm2,16,16;22,62Figure2Influenceofoxidationtemperatureonfilmthickness3Figure3Influenceofoxidationtemperatureonfilmhardness3121245,=(202),t=30min,,,,,,,,,;6A/dm2,6A/dm2,,10A/dm2,4A/dm24Figure4Influenceofoxidationcurrentdensityonfilmthickness5Figure5Influenceofoxidationcurrentdensityonfilmhardness34Electroplating&FinishingMay.20063136AB10SEM,=(202),JA=5A/dm2,t=30min6A,,1020nm,;6B,2030nm,,800/m2,6SEMFigure6SEMphotoofoxidationfilm314,,,,,,,,,,,[6],6A/dm28A/dm2,,O2-/72:7Figure7Sketchmapofoxidationfilmforminganddissolving(1),O2-/,;(2),/,,4,,,,,,;,2,,,,:[1],.[J].,2001,3(18):102-104.[2],.[J].,2003(2):97-99.[3]ZHAOYiyun,BAOCiguang,FENGRuo,etal.Electrolesscoatingofcopperonceramicinanultrasonicfield[J].UltrasonicsSonochem2isty,1995,2(2):99-103.[4]KATSUYOSHIK,ATSUSHIC,NAOKIM.Effectsofultrasoundonbothelectrolyticandelectrolessnickeldepositions[J].Ultrasonics,2000(38):676-681.[5],.[J].,2005,24(6):32-34.[6],,.[M].:,1993.[7].[J].,1999,18(1):40-43.[8],,.[J].,1996,6(1):51-55.[:],::020-81728467,81726886()Email:[e-mail]:(510170)44