esintechnologyandeconomic.theinsitusynthesisofceramicparticleavoidsthepollutionofreinforcementsandwettabilityexistingincastingtechnique,soitisvaluabletofabricatetitaniummatrixcompositeswithbetterproperties.however,therearestillquitealotofproblemstoberesolvedinordertofabricatetitaniummatrixcompositeswithhighpropertiessimplyandatlowfabricationcost.therefore,theresearchontheseproblemsintheoryandexperimentisveryimportant.
itiswellknownthatthekeyproblemindevelopmentandalicationofmetalmatrixcompositesiscostandproperty.anewtechniquehasbeendesignedtoproducetitaniummatrixcomposites,inwhichitispoibletofabricatetitaniummatrixc
ompositeswithhighpropertiessimplyandatlowfabricationcost.titaniummatrixcompositesreinforcedwithtibwhisker,ticparticleortibwhiskerandticparticle,wereproducedbycommontitaniumalloycastingtechniqueutilizingtheself-propagationhigh-temperaturesynthesisreactiobetweentitaniumandboron,graphite,b4c.inordertodeveloptheutilizationareaoftitaniummatrixcompositesandmakebasisforproducingtitaniummatrixcompositeswithhighproperties,thefollowingworkshavebeendeveloped.
1.insitusynthesismechanismoftitaniummatrixcompositesreinforcedwithtib,ticortibandticutilizingthereactiobetweentitaniumandboron,graphite,b4chavebeeninvestigated.gifreeenergydgandformationenthalpydhofreactiobetweentitaniumandboron,graphite,b4cwerecalculatedbythermodynamictheory.thegifreeenergydgofabovereactioisnegative,whichindicatesthattheabovereactioallcantakeplace.itispoibletosynthesizetib2andticutilizi
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