Ni-Ti冷噴涂層在溫度作用下的原子擴散行為及其組織性能研究.pdf

1、西安石油大學碩士學位論文NiTi冷噴涂層在溫度作用下的原子擴散行為及其組織性能研究姓名：吳限申請學位級別：碩士專業(yè)：材料加工工程指導教師：周勇20110520英文摘要Subject：Theinnuenceoftempe陽tlI他ondiffusionbehaViorandmicmstmcturepropeItiesofNi—TicoldspraylayerSpeciality：MaterialProcessingEngineeringN

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3、stanceaulderosionwearresistancepe墑mlanceHowever’processingofNiTialloysisdi伍cult，sothefabricationofsprayingcoatingsonthebaSemetalisasolutionhlordertostudytllefo咖ationmechanismofNiTiintemletalliccompouIld，NickelandTitaIli砌

4、powdersaSwellasitsmechanicalalloyingpowderswereadoptedtomakedi疏relltNi／Tidi丘hsioncouplesinthispaperTheprepaurationbycoldsprayingNi門ncoatingandt11eprocessofNi鋤dTidi岱JSioninmeinterfacewasobserVeda11danalyzedThefo眥ationmech

5、allismofimennetallicandatomdimIsionbehaViormechallisminthecoatingbycoldspmying、vcrestudiedonfocusTllisprovidesatheoreticalbausisformefIabricationofhi曲pe墑姍鋤ceNiTiintermetalliccornpomldcoatingsbycoldsprayingTheresultsshowe

6、dttlatthecompositionaIldmicrostnlcturesofcoldsprayingcoatingswereconsistent、)~，itllmemilledpo、坩ds勰sanledenseaJldnonoxidizingThee丘’cctofheat魄a_nnentconditionsontllecoldsprayN們1idifmsioncouplecoatingst]ructurea11dphaSestmc

7、tl鵬、v邪obviousTlleNi／]riinterfacemo印hologyaRerdimlSiontllrou曲SEMshowedthatNi3Ti，Ti2Ni缸ldNiTiinte姍etalliccompoundcoatingthicknessincreaSedsignificantly觴thethemlaldiflhsiontemperatureincreaLSedandthef0咖ationofNi3TiaIldTi21N

8、iw嬲priori劬ne舯wthofNmintenIle鈀1liccompollIldw嬲baseont11ep嘲bolicgrowmmles，wKlethegrowtllofNm，n2Niwerelittlee行ectw脅meincreasingofheattreatmentholdingtime11lemeCha芏licalmillingtimesigllificantlyaffectsmelayeredstmcturethickn

9、essof也eNi門npowder’rhealloypowdermilled75hNi／Tiu11derme10、vertempe豫curew弱moreaCcessiblet0f0瑚NiTiimennetalliccompouIldsaStllereaSonofthethennaldi街娼ion7Ihou曲comparative姐嘶sisofvibrationcav池tioneroSiontest，t11ecavitationerosi