電弧噴涂制備鐵基硼化物陶瓷復合涂層及其性能研究.pdf

1、分類號：TG4223890S88單位代碼：10005學號：S200309097北京工業(yè)大學碩士學位論文題目皇塾墮途劍釜迭基煎絲塹陶童復金途星叢基掛篋班塞英文并列ST【JDYoNPROPERTIES0FIRONBASEDTiB2／A1203CERAMIC題目￡Q避Q墨!!墾￡堂!!巡曼PREPAREDBYARcsPRAYING研究生姓名：湯耋云專業(yè)：撾抖翅王王程研究方向：垂亙工程導師姓名：苤皇塹職稱：斂援論文報告提交日期：2鯉至』且學位授

2、予日期：——授予單位名稱祁地址：j￡夏王些丕坐韭壹Ⅲ翦田匡堊丕圄!地呈ABSTRA(了ABSTRACTCeramiccoatingsareofgreatdeVelopmentpr0SpectCeramiccoatiⅡgsshowextensiveapplicationsiIlmanyhightechnologyf【eldsilldudingaerospace，eneIgyelec咖n，andmateriaIsetcduetoitswea

3、rresistant，hightemperatureoxidationandcorrosionresistancewithdudility，workability，elect工icandheatconductionofmetalmaterialAtpresent，maIlypr印arationmethodsforceramiccoatingshavebeencommonlyused，chemicalvapordeposition(cVD

4、)physicalvapordeposition(PVD)，impulseelectmded印ositionandthemalsprayiⅡgThe皿alsprayingisanimponantsurfhceenginee血gtechnologyArcsprayiIlgisab珀nchoftheⅢlalsprayiIlgtechnolo垂escomparedwithpIasmasprayiⅡgandHVOFithastheadvanta

5、gesofeasy—adjustingchemicalcomPositions，lowprice，convenienceoffield—workInthispapeLpmpeniesofironbasedTiB2／A1203compositeceramiccoatingsandnanostnlcturedcoatiIlgswerestudiedsurfaceRockwellhardness、bondings仃en粵h、hightempe

6、ratureoxidation，weaLthe皿alshockpropertiesandpoIosityofthecoatiⅡgsweretestedThemicrostmctureofarcsprayedccramiccompositecoatin黔wasiIlvestigatedbyxraydi∞『action0皿D)，microFaphs，scanllingelectronmicroscopy(sEM)andene瑪yspec【n

7、lmTheef￡ectsofcomposidonincoredwireonpmpeniesofthecoatillgswerestudiedT11eresultsshow：(1)ThebondiⅡgstrengthofcoatiⅡgspreparedbycontainingTiB勰1203corcdwires，themaxim岫bondingstrcngtllofmecoatingwas5722MPaMicroscopicwasincr

8、easedfTom772to1526，TiB勰lz03caIle鼠ctivclyimprovetheabradabilityofcoatiⅡgSTheadditionofalloyincreasedtlIehardⅡessofthematrixa11ditswettiIlgpropenies(2)NanostnlcturedandconventioⅡal∞atillgsweredepositedbyarcsprayi】lgItwasfo

9、undedthatsurfaceRockwellofnaⅡostuctIlrcdcoatingwasiⅡthesamelevelcomparedwithconveⅡtionalcoatingS，bondiIlgstrengthincreased15times，themaximumofresidualstressdecreasesto260MPa仃om280MPa(3)11leeffcctsofnanostIucturedpowderon