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《噴射電沉積Ni及Ni-ZrO2復(fù)合鍍層的表面形貌和硬度-論文.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、噴射電沉積Ni及Ni—ZrO2復(fù)合鍍層的表面形貌和硬度／蘭龍等·111·噴射電沉積Ni及Ni—ZrO2復(fù)合鍍層的表面形貌和硬度蘭龍，譚俊，吳迪，黃曾輝，曾其彬(1裝甲兵工程學(xué)院再制造技術(shù)重點(diǎn)實(shí)驗(yàn)室，北京100072；2裝甲兵工程學(xué)院表面工程重點(diǎn)實(shí)驗(yàn)室，北京100072)摘要采用噴射電沉積技術(shù)在45鋼基體上制備了Ni及Ni—Zr02復(fù)合鍍層，并對(duì)各種鍍層進(jìn)行掃描電子顯微鏡(SEM)表面形貌觀察、能譜分析(EDS)、X射線衍射儀(XRD)晶粒尺寸測(cè)定以及鍍層顯微硬度測(cè)定。比較了不同電流密度、溫度和納米顆粒
2、濃度對(duì)鍍層表面形貌和硬度的影響規(guī)律。結(jié)果表明：電流密度由0．55A／cm提高到l_。0A／c后，鍍層表面越粗糙，晶粒尺寸由15nm增大到23nm，顯微硬度由571HV降低到364HV；溫度由2O℃升高到50℃后，表面呈現(xiàn)先變粗糙后變平整趨勢(shì)，且鍍層中Ni含量上升，F(xiàn)e含量下降，鍍層硬度由551HV降低到364HV；Zr()2納米顆粒質(zhì)量濃度由0g／L提高到25g／L時(shí)，表面仍呈現(xiàn)先變平整后變粗糙趨勢(shì)，鍍層晶粒尺寸由22nm降低到l3nm，硬度由384HV提高到521HV。關(guān)鍵詞噴射電沉積Ni—Zr()
3、2復(fù)合鍍層表面形貌硬度中圖分類號(hào)：TQ153．1文獻(xiàn)標(biāo)識(shí)碼：ADOI：10．11896／j．issn．1005—023X．2014．16．027SurfaceMorphologyandHardnessofNiandNi—ZrO2CompositeCoatingsPreparedbyJetElectrodepositionLANLong，TANJun，WUDi。，HUANGZenghui，ZENGQibin(1ScienceandTechnologyonRemanufacturingLaboratory
4、，AcademyofArmoredForceEngineering，Beijing100072；2KeyLaboratoryforSurfaceEngineering，AcademyofArmoredForceEngineering，Beiing100072)AbstractNiandNi～ZrO2compositecoatingswerepreparedbyjetelectrodepositionon45steelsubstrate．Kindsofcoatingswereinvestigatedwi
5、thscanningelectronmicroscopy(SEM)，energydispersivespectroscopy(EDS)analysis，X-raydiffraction(XRD)andmicrohardnesstester．Theeffectsofcurrentdensity，temperatureandnanopar—ticleconcentrationonthesurfacemorphologyandhardnessofcoatingswerecompared．Theresults
6、indicatethatwiththeincreaseofcurrentdensityrangedfrom0．55A／cmto1．00A／cm，thesurfacebecomesmooth，grainsizein—creasedfrom15nmto23nmandmicrohardnessdecreasedfrom571HVto364HV．AsthetemperatureWaSrisenfrom20℃to50℃。surfacemicroscopybecomesmootherthenrougher，Nic
7、ontentinthecoatingelevatedwhileFede—creased，andmicrohardnessdecreasedfrom551HVto364HV．WithnanoparticleconcentrationofZrO2increasedfrom0g／Ito25g／I，thesurfacemicroscopystillbecomesmootherthenrougher，grainsizeofcoatingsdecreasedfrom22nmtol3nmwhilemicrohard
8、nessincreasedfrom384HVto521Hv．Keywordsjete1ectrodeposition，Ni—ZrOzcompositecoatings，surfacemorphology，hardness應(yīng)用于納米晶Ni及其合金、泡沫金屬Ni的制備]。0引言與純Ni鍍層相比，Ni—ZrO納米復(fù)合鍍層由于ZrO。顆噴射電沉積(高速噴鍍)技術(shù)是將電解質(zhì)溶液高速噴射粒的加入，在一定范圍內(nèi)鍍層的硬度、耐磨性、抗高溫氧化性到作為陰極的金屬基體表面，
