a review of the development of three generation of small diameter silicon carbide fibers英文文獻資料

a review of the development of three generation of small diameter silicon carbide fibers英文文獻資料

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時間：2019-07-02

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1、40THANNIVERSARYJMATERSCI41(2006)823839Areviewofthedevelopmentofthreegenerationsofsmalldiametersiliconcarbide?bresA.R.BUNSELL,A.PIANTEcoledesMinesdeParis,CentredesMateriaux,BP87,91003EvryCedex,France′Threegenerationsofsmalldiameterceramic?bresbasedonpolycrystallinesiliconcarbidehave

2、beendevelopedoveraperiodofthirtyyears.Thishasbeenpossibleduetostudiesintotherelationshipsbetweenthemicrostructuresandpropertiesofthe?bres.Avarietyoftechniqueshavebeenemployedbyresearchteamsonthreecontinents.The?bresaremadebytheconversionofpolymerprecursorstoceramic?bresandallthreeg

3、enerationsarepresentlyproducedcommercially.Thenatureoftheprecursorandthetechniquesusedforcross-linkinghavebeenvariedinordertooptimisebothpropertiesandcostofmanufacture.Ithasbeenpossibletoimprovethecharacteristicsofthe?bresastheprocessesinvolvedinthecross-linkingoftheprecursor?bresh

4、avebeenbetterunderstoodandthemechanismsgoverningbothroomtemperatureandhightemperaturebehaviourdetermined.Theresultisthat,although?rstgeneration?breswerelimitedbyalowYoungsmodulusatroomtemperatureandbycreepandinstabilityofthestructureattemperaturesfarlowerthanthoselimitingthebehavio

5、urofbulksiliconcarbide,thethirdgeneration?bresshowsmanyofthecharacteristicsofstoichiometricsiliconcarbide.Thisremarkableimprovementincharacteristicshasbeenduetoathoroughunderstandingofthematerialssciencegoverningthebehaviourofthese?breswhicharereinforcementsforceramicmatrixcomposit

6、ematerials.C2006SpringerScience+BusinessMedia,Inc.1.IntroductionThePCSobtainedinthiswaycouldbemeltspuntogiveSiliconcarbide?bres,withdiametersofaround15μm,weak?bres.Stabilisationwasinitiallybycross-linkingwere?rstproducedcommerciallyin1982byNipponCar-ofthepolymerbyheatinginair,just

7、asinthecarbonbon.Thisindustrialproductionwasthedirectresultof?breproductionrouteusingPANprecursors.Thiswasresearchstartedinthe1970sandcarriedoutbyProfessorfollowedbyheatinginvacuumattemperatures,generallyYajimaandhisteamattheTohokuUniversityinJapan.around1200?Candallowedthe?rstgene

8、rationofsmall-Theapproacha

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