電弧噴涂制備鐵基硼化物陶瓷復(fù)合涂層及其性能研究.pdf

1、分類號(hào)：TG4223890S88單位代碼：10005學(xué)號(hào)：S200309097北京工業(yè)大學(xué)碩士學(xué)位論文題目皇塾墮途劍釜迭基煎絲塹陶童復(fù)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(dǎo)師姓名：苤皇塹職稱：斂援論文報(bào)告提交日期：2鯉至』且學(xué)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

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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