超細(xì)WC粉體的制備及其在耐磨涂層中的應(yīng)用.pdf

1、Y827129利：I曼生生一Ijc㈠：62吐監(jiān)——蝴船JIANGSUUNlVERSITY密絨：一J姐——編碼：且幽里醇婦，0碩士學(xué)位論文MASTER’SDlSSERTATIoN@論文題目：』強(qiáng)巡幽蝴燔碟疰蚌讎躥鼬虛困學(xué)科專(zhuān)業(yè)：越牲豎～作者姓名：鏨整指導(dǎo)教師：監(jiān)志副鍪援～答辯H期：枷j辜6目盟丑江蘇大學(xué)碩士學(xué)位論文ABSTRACTThepreparationofultrafineW03powdersandthedeoxidizingand

2、carbonizingofW03tOWCwerestudied，WellabrasiveresistantmetalcompositecoatingstrengthenedbynltrafineWCparticleswaspreparedbyflamethermalspraymethodandabrasivewearpropertywasstudiedUltrafineW03powderswerepreparedbycolloidalc

3、hemicalmethodusingsodiumtungstate，hydrochloricacidandpalmityltrimethylammoniumbromideasstartingmaterialsTheeffectofconcentrationofreactant，mixingmannersurfactantonsize，morphologyandagglomerationofpowderswerestudied，andth

4、eparameterswereinvestigatedItwasfoundthatdroppingreactantstogetheratthesametimeandmechanicalstirringcouldimprovethedispersepropertyoftheparticlesinthesolutionKeepingconcentrationofreactantcouldmakeelectrolyteparticlespro

5、duceappropriatethicknessofelectricaldoublelayeroncolloidalparticlesMechanicalforcebetweencolloidalparticlesdecreasedthechanceofcollisionandrestraincolloidalparticlesfromgrowingThiscontributedtoformationofnonagglomerateul

6、tra_fineW03powdersUltrafineWCpowderswerepreparedwiththemixingofultrafineW03powderswithcarbonblackbycontinousdirectcarburizationprocessTheeffectofdifferentmolarratioofW03／C，reactiontemperatureandreactiontimewerestudiedThe

7、powderswerecharacterizedbyusingseveraltechniquessuchasBETXRD，SEM，andSOonTheultrafineWCpowdersandtheNibasedpowdersweremixedTheultrafineWCmetalcompositecoatingwaspreparedbyflashthermalspraymethodTheeffectofthevolumefractio

8、nofultrafineWConthecoatingpreparationtechniqueandtheabrasiveresistantabilitywerestudiedThecompositecoatingdisperedwithlv01％ultraflneWCparticlespresentedthebestwearresistancepropertyandthebestmicrohardnessKeywords：W03，WC，