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a review of the development of three generation of small diameter silicon carbide fibers英文文献资料

a review of the development of three generation of small diameter silicon carbide fibers英文文献资料

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时间：2019-07-02

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1、40THANNIVERSARYJMATERSCI41(2006)823839AreviewofthedevelopmentofthreegenerationsofsmalldiametersiliconcarbidefibresA.R.BUNSELL,A.PIANTEcoledesMinesdeParis,CentredesMateriaux,BP87,91003EvryCedex,France´Threegenerationsofsmalldiameterceramicfibresbasedonpolycrystallinesiliconcarbidehave

2、beendevelopedoveraperiodofthirtyyears.Thishasbeenpossibleduetostudiesintotherelationshipsbetweenthemicrostructuresandpropertiesofthefibres.Avarietyoftechniqueshavebeenemployedbyresearchteamsonthreecontinents.Thefibresaremadebytheconversionofpolymerprecursorstoceramicfibresandallthreeg

3、enerationsarepresentlyproducedcommercially.Thenatureoftheprecursorandthetechniquesusedforcross-linkinghavebeenvariedinordertooptimisebothpropertiesandcostofmanufacture.Ithasbeenpossibletoimprovethecharacteristicsofthefibresastheprocessesinvolvedinthecross-linkingoftheprecursorfibresh

4、avebeenbetterunderstoodandthemechanismsgoverningbothroomtemperatureandhightemperaturebehaviourdetermined.Theresultisthat,althoughfirstgenerationfibreswerelimitedbyalowYoungsmodulusatroomtemperatureandbycreepandinstabilityofthestructureattemperaturesfarlowerthanthoselimitingthebehavio

5、urofbulksiliconcarbide,thethirdgenerationfibresshowsmanyofthecharacteristicsofstoichiometricsiliconcarbide.Thisremarkableimprovementincharacteristicshasbeenduetoathoroughunderstandingofthematerialssciencegoverningthebehaviourofthesefibreswhicharereinforcementsforceramicmatrixcomposit

6、ematerials.C2006SpringerScience+BusinessMedia,Inc.1.IntroductionThePCSobtainedinthiswaycouldbemeltspuntogiveSiliconcarbidefibres,withdiametersofaround15µm,weakfibres.Stabilisationwasinitiallybycross-linkingwerefirstproducedcommerciallyin1982byNipponCar-ofthepolymerbyheatinginair,just

7、asinthecarbonbon.ThisindustrialproductionwasthedirectresultoffibreproductionrouteusingPANprecursors.Thiswasresearchstartedinthe1970sandcarriedoutbyProfessorfollowedbyheatinginvacuumattemperatures,generallyYajimaandhisteamattheTohokuUniversityinJapan.around1200◦Candallowedthefirstgene

8、rationofsmall-Theapproacha

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