化学镀非晶态Ni_P镀层孔隙率及其结构研究[1]

40Ni-P100072Ni–P61.540µmX(XRD)(SEM)Ni–PTQ153.2A1007–9289(2002)03–0040–031Ni-P15%22.1A3100mm50mm2mmö18mmö12mmDK–98–ICS501500mL1000mL2000mLCTG–10EDAX–9100XXD–D1XJSM–35C353.5%1979–()2002–05–22;2002–06–17NaCl8h16h2.22.311Table1Compositionofsolutionandprocessofoperation(gL1)pH20302030203015205104.44.68423Ni–PNi-P20023(56)413.1232Table2Chemicalcompositionofsolutionoftheporosityexperiment/gL1102010min3Table3Relationbetweenthicknessofcoatingandporosity/µm101620253035415256678899330µm40µm9H23.244Table4Comparisonofporosityofpolishedandunpolishedcoatings(µm)112.375217.296330.398443.7109551.210912443.7µm10591000h750h3.31.02555Table5Relationofporosityandmassfractionofstabilizers51.52.0w()1.01.52.02.53.0µm/h1211.511.3109.67886642Ni-P0.1%1.52.05%3.411Fig.1Relationofplatingrateandservicecyclesofplatingsolution11623112µm/h66.5µm/h22Fig.2Relationofporosityandservicecyclesofplatingsolution210.5929366,43×300Fig.3Thecross-sectionofcoating4Fig.4X-raydiffractionpatternsofspecimensXXRD2=45°Ni–P10µmNi(45)20023(56)45(1)Cr207DE410–15(2)CrNiM+FHRC38(3)600104h[1]..[Z].1989316.[2].[M].,1980,216.[3].[M].,1981,225.39118002Tel:[phone](42)Pw(Ni)=0.9129;w(P)=0.087130µmNiPw(Ni)=0.9143w(P)=0.08574(1)X(2)40µm9(3)1.52.015%(4)126[1],.[C]..200039-42.[2].[M].,,2000,490.[3],.[M].,2000240.[4]AntlerM.Plating&SurfaceFinishing[J],1991,78(6):58.[5]GB/T13913-92-[S].21100072••2002128ISO900014000180004610082301068533613••154020021157150080111()E-mail:[e-mail]@public.hr.hl.cn0451634085010041003100704516333949IV()()(InternationalBoard)Prof.ThomasBell(UK)Prof.WladyslawWlosinski(POLAND)Prof.LeoVincent(FRANCE)Dr.RonghuaWei(U.S.A)Prof.TadeuszWierzchon(POLAND)Prof.JornLarsen-Basse(U.S.A)Prof.ShojiMiyake(JAPAN)Dr.HowardHawthorne(CANADA)()properties.AESandXPSwereusedtodeterminetheTaconcentrationdepthprofileandchemicalcomposition,Themechanismofincreasingcorrosionresistanceafterionimplantationwasalsodiscussed.Keywords:ionimplantation;pittingcorrosion;corrosionresistance;dynamicionbeammixing;ionbeamassisteddeposition;Cr4Mo4V;Cr12MoVAResearchontheContactFatigueStrengthofAlloyCastIronGearDriveswithAlloyCoatingLIXiao-zhou,HUANGHua-liang,WENFang(36~39)Abstract:Directingagainstthegearsastheobjectofthisresearch,AconventionalrollersimulatingtesterwasusedtocomparethecontactfatiguestrengthofCu-Cr-PalloycastironrollerswithandwithoutCuandNiWcoatings.30pairsofrollerswereexamined.Theresultsshowedthatthealloycoatingscanincreasesignificantlythecontactfatiguelifetimeofalloycast-irongears.Themicrostructureandpropertiesofcoatingswerealsoanalysed.Keywords:pittingresistance;contactfatiguestrength;alloycoating;geardrives;alloycastironStudyonthePorosityandStructureofElectrolessPlatingNickel-PhosphorusAmorphousAlloyCoatingLUYa-hui,HUANGYan-bin,SHIXiao-jun(40~42)Abstract:Inthispaper,theNickel-Phosphorusalloycoatingwasdepositedoncarbon-steelbyelectrolessplating.Theinfluenceofplatingcyclesonvariousparameterswassystematicallyinvestigated.Thetechnologicalprocesswasoptimized.Theinfluenceofstabilizeronporosityofcoatingwasalsoinvestigated.Thethicknessof40µmwasdeterminedtoensuretheanticorrosivepropertiesofthecoatinginseawater.Thecomposition,phasestructureandelementdistributionofcoatingwereanalyzedbymeansofXRDandXPS.Keywords:electrolessplating;anticorrosioninseawater;Nickel-Phosphorusalloy;porosityR&DofG207D(E410–15)ModelWeldingRodofHardDacingXUZai-li(43~45)Abstract:ThroughadjustingthecontentofCrandNi,themicrosfractureofhardfacingcanbecontrolledwithintheM+Fregion.Theadditionofiron-vanadiumandrare-earthelementscanmakethehardfacingalloyreachingthedesignedhardnessaftertemperingat60010for4hours,Thusthewearandcorrosion-resistanceandwear-resistanceathightemperaturecanbeimproved.Keywords:hardfacingmetal;hardness;air-cooling;tempering