化学气相沉积法制备硼掺杂玻璃炭材料.pdf

《化学气相沉积法制备硼掺杂玻璃炭材料.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第27卷第3期新型炭材料VO1．27NO．32012年6月NEWCARBONMA巳RIAI，SJun．2012ArticleID：1007·8827(2012)03-0226-07Boron—dopedglassycarbonfabricatedbychemicalvapordepositionxuLi，WUJun-feng，BAIShuo(ShenyangNationalLaboratoryforMaterialsScience，Instit~eofMetalResearch，ChineseAcademyofSciences

2、，Shenyang110016，China)Abstract：Aboron-dopedglassycarbonwasfabricatedbychemicalvapordepositionfromagaseousCH4／BC13mix-ture．ItwascharacterizedbyX—raydiffraction，Ramanspectroscopy，scanning，andtransmissionelectronmicroscopy．Resultsshowthatthedepositedcarbonischaracteris

3、ticofaglass-likecarbonbutwithboroncarbidenanocrystalsaround20nlTlindiameteruniformlydistributedinitsmatrix．Incontrasttotheconventionalnon—graphitizableglassycarbon，theproductbehavedsimilarlytoagraphitizablecarbononhigh—temperaturetreatmentbecauseofthestrongcatalytic

4、graphiti—zafioneffectoftheboron．Tlleglasscarbonwastransformedintolamellarcarbonstructures．probablybyadissolution—precipitationmechanism．KeyWords：Boron；Glassycarbon；Chemicalvapordeposition；MicrostructureCLCnumber：TB333Documentcode：A1Introductiontantly，theyarenotsuita

5、bleforthepreparationofglass—likecarbonthickfilmsorcoatings．InthisGlassycarbon(GC)hasbeenusedinawideva—work。wedemonstratedaroutinetofabricateboron．rietyofapplications，suchasmedicalimplants，high—dopedGCs(B—GCs)byasimplechemicalvaporperformancematerialsfortheaerospacei

6、ndustry，deposition(CVD)methodusingagaseousCH4／BC13electrochemicalelectrodes。andfuelcellcomponentsmixtureascarbonandboronprecursors，whichisowingtoitslowdensity，highchemicalinertness，ratherdiflferentfromthepolymericprecursorscom—hjghresistancetooxidation，hardness，andi

7、mpermea—monlyusedintheconventionalproductionofGCs．bilitytogasesandliquids【．TheincorporationofBythismethod．wecaneasilyobtainB—GCcoatingsheteroatomsintotheGCsthrougheithersurfaceLororthinfilms．Boronhasbeenchosenasthedopant，homogenousmodificationsLhasalsobeenactivelybe

8、causeitiswellknowntobeastronggraphitizationinvestigatedinordertofurtherimprovethepropertiescatalystforcarbonmatedalsL14J．However，thecon．Of