鎳基電弧噴涂粉芯絲材及其涂層耐蝕性能的研究.pdf

1、分類號：TGl74422題Y890987單位代碼：10005學(xué)號：s200309095密級：北京工業(yè)大學(xué)碩士學(xué)位論文英文并列sTuDYoNNICl④I，BAsEARCSPRAVEDcoImDⅥ，mEANDCoRRoSIoN—RESISTANT研究生姓名：董攫專‘業(yè)：撾魁加王王捏研究方向：盤面王程墊苤導(dǎo)師：整建亟職稱：副熬援論文報告提交日期：2堂生5且學(xué)位授予日期：2逝至目授予單位名稱印地址：jE蠱王些太堂|E壅直羽田匡王巫目l地曼!盟蝗

2、2ABSTRACTNickel_basedalloyhaSgoodcormsionresistancepropertyin11ighteInperan】reandvaIiouscoⅡosioncond“ionsInthe甜icle11ickel_basedalloycoatingsweredepositedtosur白ceoflowcarbonsteelQ235byarcsprayingprocess，謝lichwouldbeusedf

3、orresolvingthecorrosionprotectionpmblemoftheequipmentsandpipingcontactingsour，aIkali，saltliquidinthepetrochemicalenginee面19NickelbasedalloycoatingswerepreparedbyarcsprayingprocessConVentionalperfbnnanceandmicros訊lcnIreso

4、fNibaSedcoa恤gswereinvestigatedbymeansofscann證gelectron墑croscopy(SEM)andenergy一出spersivea工lalysis(EDAx)aildX—raydi缶actionO(RD)amlysis，andcontrastivestudyofNi—crMo，Ni—Cr_MoAl，Ni—Cr_BalloycoatingsCorrosion—resistanceperfoⅡn

5、anceofcoatingswaseValuatedbymeansofllightemperatureoxidationteSt，saltspraytestaIldelec訂ochemicalcolTosiontestAndtheconDsionmecha[1ismswerediscussedResllltsar℃asfbnows1N岫asedcored誠reswerepr印瓣dbyusingNi—Cr_striptowapmetalp

6、owderofNi，Cr，Mo，CrBNibasedcoatiIlgswerepreparedbyelectricarcsprayingprocess，havecompactsurfke，more血aIl4弧仰aofbondmgstre雌：th聊ical1ayeredNibasedcoatingswerefabricatedNi_basedcoatingscolltailledNi，o)【ideandspinelstmctureofNi

7、Crasthem萄orconstimcntbyanalysisofSEM，EDS，XRD2Cofrosion—resiStaneeperfonnanceofNibascdco撕ngswasinvestigated(1)Saltspr暑【y—testsho、Ⅳed恤tNibasedcoatingscon切iningMoelementhadbettera塒一chlorineioncorrosionperfbmlancethan也atofNi

8、_b嬲edcoatmgs謝moutMoelementWhenco撕ngscontainedrareeaml(RE)，REreducedporos時radoa11dmadecoatingsmorecompact，W【lichsn℃ng也eneda塒cmorineioncormsionpefformallceofcoatings。(2)Hi曲temperanlreoxidationtestshowedthatbydi婦Fera呲colltc

9、mofCrelementinNibasedcoatings，coa吐ngshad慚osortsofoXidatiOnprocessWhenNibasedcoatingshadabout20訊％Creleme她oxid撕onprocess、ⅣasdelaminationoxidatiOnprocessWhenNibasedcoam培shadmorc也an30砒％Crelement，oxidationprocesswasselectiveo