机械研磨对电沉积Ni镀层微观结构与性能的影响.pdf

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1、Availableonlineatwww．sciencedirect．comTransactionsof-：j，ScienceDirectNonferrousMetals爱SocietyofChinaPressTrans．NonferrousMet．Soc．China22(2012)1989—1994www．tnmsc．cnEctofmechanica1attritiononmicrostructureandpropertyofelectroplatedNicoatingBANChao．1ei，SHAOX

2、in，一，MAJie，一，CHENHui，1．SchoolofMaterialsScienceandTechnology,LiaochengUniversity,Liaocheng252059，China；2．LiaochengResearchInstituteofNonferrousMetals，Liaocheng252059，ChinaReceived13August201l；accepted21November2011Abstract：Nicoatingwasdepositedoncarbonste

3、elbyamechanicalattritionenhancedelectroplating(MAEE)process．Duringtheelectroplating．themechanicalattrition(MA)wasintroducedbyimpactofglassballsonthesamplesurfacewithaspecialvibratingfrequency．Thesurfaceandcross—sectionalimagesofNicoatingwereobservedwithSE

4、M．ThemicrostructureandcrystallinityofcoatingwereexaminedwithTEMandXRD．Theelectrochemicalperformanceofcoatingwasmeasuredwithpolarizationcurvesandelectrochemicalimpedancespectroscopy(EIS)anditsmechanicalbehaviours．suchastensilestrengthandhardness．werestudie

5、d．TheresultsshowthattheMAhassignificanteffectsonthemicrostructureandpropertyoftheelectroplatedNicoating．ByMA．thecoatingbecomessmooth，compact，thinandhasrefinedgrainsandisfreeofcracksandpores．Consequently,theadhesion，tensilestrength，hardnessandcorrosionresi

6、stanceofcoatingareimprovedsignificantly．Kevwords：electroplating；mechanicalattrition；Nicoating；corrosionresistancechromizing，canbeenhancedbySMAT[4—61．Ithas1IntrOducti0nbeenreportedthatthenano．crystallizedaluminizedcoatingscanbepreparedatarelativelylowtempe

7、ratureNicoatinghasbeenwidelyusedinindustriestowithahighratebyatechniquecombinedSMATwithimprovethesurfacepropertiesofvarioussubs仃atealuminizing．Furthermore，anovelultrasonic．baseddl、，materialsduetoitsgoodcorrosionresistance，highmechanica1processhasbeenpropo

8、sedforcoatinghardnessandexcellentwearresistance．TherearesomemetallicsurfacewithothermetalorceramicmaterialsweakfeaturesinNicoatingformedbythe仃aditiona1[7—9]．NINGeta1『10-121reportedtheeffectofelectroplating(CE)．First