高速電弧噴涂Fe-Al-Cr3C2復(fù)合涂層的性能研究.pdf

1、類別：全日制碩士研究生題目：高速電弧噴涂類別：全日制碩士研究生題目：高速電弧噴涂FeAlCr3C2復(fù)合涂層的性能研究英文題目：復(fù)合涂層的性能研究英文題目：PropertiesResearchofHVASFeAlCr3C2CompositCoatings研究生：孫二雄研究生：孫二雄學(xué)科名稱：材料學(xué)學(xué)科名稱：材料學(xué)指導(dǎo)教師：徐潤生指導(dǎo)教師：徐潤生教授級高級工程師教授級高級工程師二○○九年五月二○○九年五月碩士學(xué)位論文碩士學(xué)位論文分類號:學(xué)校

2、代碼:10128分類號:學(xué)校代碼:10128UDC:學(xué)號:20061261學(xué)號:20061261AbstractComparedtohighvelocityflamesprayingtechniqueshighvelocityarcsprayingtechnologyhassuchadvantagessuchas:highsprayingefficiencyenergysavingcosteffectivebetterautomatic

3、itcouldobtaingoodperfmancecoating.byadjustingthepowderofFe15Al45Cr3C2intheprocessofHVFSsixkindofdifferentcompoundcedwireswereobtained.Inthispresentwkhighvelocityarcspraying(HVAS)cedwiretechnologywasedtheintermetalliccoat

4、ingswithsupericrosionwearresistanceathightemperaturewerealsofoundItisagoodfoundationftheindustrialapplicationofthecoatinginfuture.Theadhesionstrengthmicrohardnesscrosionwearresistanceathightemperatureerosionwearresistanc

5、eathightemperaturefrictionwearbehaviourofsixFeAlCr3C2compositecoatingswereinvestigatedinthiswk.ThemphologyofcoatingswereobservedbySEMEDAXitsphasecompositionswereanalyzedbyXRD.Thecrosionerosiontheeffectmechanismofrareeart

6、hoxidationonthemwereinvestigated.Themainresultsofthiswkweresummarizedasfollows:Bymicrostructureanalysisitwasfoundthatthecompositecoatingpossessedtypicallaminatestructuretheposityunmeltedparticlesaswellaslargeflatsizepart

7、icleswithsmallamountinterfacecrackwereexistedinittheparticlesboundedverywellathinoxidationfilmexistedbetweenlargeflatsizelayersthereinfcementphaseCr3C2distributedunifmly.ThecompoundphasesmainlyincludedFe、Al、Cr3C2、Fe3AlFe

8、Al、FeCraswellassmallamountCe2Ni7.Theadhesionstrengthofthethreekindofcoatingswiththematrixwereallmethan33MPathehighestmicrohardnessreached444.32HVaswellas44.02HRC.Thecompositecoatingspossessbetterpropertyofhotcrosionresis

9、tance.Thecurveofcrosiondynamicsfollowsthedisciplinarianofparabolagenerally.Theweightgainsofthethreecompositecoatingswereabout67.25%、37.32%29.15%ofthe20Gsubstrateafter150hhotcrosionabout74.6%、41.4%、32.3%oftheFe15Al45Cr3C2