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ID:33674702
大小:13.00 MB
页数:54页
时间:2019-02-28
《反应氮弧熔覆tin-tib2%2ffe基复合涂层组织与耐磨性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据ResearchonStructureandWearResistanceofTiN—TiB2/FeMetalCeramicCoatingPreparedByReactiOnNitrogenArcCladdingAuthor:GengZhenSupervisor:HaojianjunM萄or:AgriculturalMechanizationEngineeringAbstractConst锄timproVementofagriculturalmechaJlizationaIldautomatiOnrequiresincreasinglyh
2、igherofperfonllancesofagriculturaltools.HoweVer,toolwearresultsinreducedwholepe订、o珊ance,heaVierworkingresistallcea11dincreased如elconsumption;行equentreplacementdelaysthefa眦ingseasonaIldincreasesthecostinactualproduction.Thus,itisofgreatsigni6cancetoproduceagriculturaltoolswit
3、lllowcosta11dhi曲sen,icelifesoastocatchupwithfaStdeVelopmentofmodemagriculnlralmechanization.WithnitI.ogenastheprotectiVegasandreactantgas,thistopicadoptsreactionni仃ogenarccladdingtecllnologyandWSME-630argonarcweldertorealizein—situsyntIlesisofTiN-TiB2/Fecemletcompositecoatin
4、gonQ235matrixwhichispre-coatedwithTipowder,BNpowderandNi60powdersoaStoimproVeabrasiVeresistallceofa酊culturaltoolsaJldextendt11ese州celife,studiesf.eanlre,phase,hardnessaIldabrasiVeresistaIlceofthecoatingbyKYKY-2800BscallIlingelectronmicroscope,D/ma)【一2500rotatinganodeX·raydif
5、hactometer,S一4800coldfieldemissionscanningelectmnmicroscopeene唱ydiSpersiVespectrometer,MH-6microhardnesstesterandHRS一2Mreciprocating衔ctionweartester,optimizestecllIlologicalpar锄etersaIldanalyzesfonIlationmechaIlismaIldwea卜resistaIlcemechanismofTiN-TiB2/Fecoating.Additionally
6、’thistopicstudiesinfluencesofdi毹rentcontentsofbindingphaseNi60uponcoatingmoldingandmicroscopicstmcture,confi册sthatthecoatingisflatafldeVenlyfornled、vithoutopendefectswhenthebindingphaseproponionisabout40%andtheabrasiveresiStaJlceiscomp甜ativelygood.ItisobserVedbyelectmnmicros
7、copethatthecoatingcanbedividedintocoatingzone,bindingzoneaIldbasezone.Atransitionbeltwithgoodmetallu唱icalbondingisfomedinthebindingzonebetween廿lecoatingandmebase.Moreover,singlefactorexperimemisc删edouttostudyinfluencesofnitrogennow,claddingcurrentandcladdingvelocityuponstmct
8、ure,hardnessand衔ctioncoemcientofthecoating;theresultsshowthattoolownitrogen
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