6063铝合金材料镀银层脱落原因及其解决途径

:20090817;:20090920:(1975),,,..Email:[e-mail].30No.10Oct.20096063郝留成1,廉继英1,周瑛1,宋忠孝2(1.,467001;2.,710049):用扫描电子显微镜(SEM)和金相显微镜分别对镀银层脱落与不脱落的两种铝合金工件表面形貌和金相组织进行分析,分别对工件进行碱洗酸洗和浸锌处理结果发现,两种材料的金相组织显著不同,镀银层脱落工件材料与银层不脱落工件材料在酸洗以及浸锌后表面组织有显著差异对6063铝合金材料镀银层脱落原因进行分析,并提出解决方法:电镀银;铝合金;组织:TG146.2+1:A:10008365(2009)10135003PeelingoffReasonofAgCoatingon6063AlloyandItsSolvingMethodHAOLiucheng1,LIANJiying1,ZHOUYing1,SONGZhongxiao2(1.HenanPingGaoElectricCo.,Ltd.,Pingdingshan467001,China;2.StateKeyLaboratoryforMechanicalBehaviorofMaterials,XianJiaotongUniversity,Xian710049,China)Abstract:Thesurfaceandmetallographytextureofuntreated,acidicetchedandzincdipping6063alloysampleswasobservedwiththeSEMandopticalmicroscoperespectively.Thetwokindsamplesweretreatedwithalkalineetching,acidicetchingandzincdipping.TheresultsrevealedthatalloytexturewasquitedifferentbetweentwokindalloysthattheAgcoatingpeeledoffandnotpeeloff.Thesurfaceoftwokindsamplethattreatedbyacidicetchingandzincdippingalsohasobviouslydifference.Thereasonofthisphenomenonwasanalyzedandthesolutionwasalsogiven.Keywords:PlatingAgcoating;Alalloy;Microstructure,,,,,,,,,,,,,,,[1~3],,[4,5]Si16063,1:16063w(%)Tab.16063compositionofaluminummaximmaterialCuSiFeMnZnAl0.10.3~0.60.1~0.30.10.1:NaOH,Na3PO412H2O;Na2CO3;:HNO3,SEM(EDS)22.1未处理试样1(A)(B)1,(1)Si;(2)Si,,Al,Si,135010/2009:60631(100)Fig.1Metallographytexturesamples2SEMFig.2SEMgraphofafteracdicetchingsamplesSi2.2酸洗后试样,,,[5],2,,,;,,,Si,2.3浸锌后试样[6],Al203Al,,,,,,,,,,3SEM,(A),,;(B)Zn,Zn,Zn,29.9%13.6%1351FOUNDRYTECHNOLOGYVol.30No.10Oct.20093SEMFig.3SEMgraphofzincdippingsamples2.4解决方案SEMEDS,,:SiSi,,,(31),Si,,,,36063Si,,,,31,[1].[J].,2003,22(3):5556.[2],,.[J].,2005,23(10):2021.[3].[J].,2003,23(5):1112.[4],,.[J].,2008,27(6):47.[5].[J].,2004,26(2):2425.[6],,,.[J].,2006,28(3):2226.1352