TiB-,2-顆粒增強(qiáng)高強(qiáng)高導(dǎo)銅基復(fù)合材料研制.pdf

1、南昌大學(xué)碩士學(xué)位論文TiB顆粒增強(qiáng)高強(qiáng)高導(dǎo)銅基復(fù)合材料研制姓名：吳波申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料物理與化學(xué)指導(dǎo)教師：張萌20081219AbstractABSTRACTCoppermatrixcompositesreinforcedwithborideparticleshavebeenwidelyusedaselectrodematerial，contactmaterial，integratedcircuitleadframemater

2、ialbecauseoftheirhi曲strengthhi曲electricalconductivityexcellenthi曲temperature，andSOonInthispaperTiB2／Cucompositeswerepreparedbypowdermetallurgyandelectric—arCmeltingTheconditionofin—situreactiontoprepareTiB2／Cubydifferent

3、methodswasdiscussedTechniqueparametersofthein—situreactionandtheaffectiontothemicrostructuresandpropertiesofTiB2／CucompositeshavebeenstudiedThefollowingaresomemeaningfulresults：(1)Theconditionsofalloyingbywetbailingwithg

4、rainalcoholWasobserved，andthereasonsofformingdifferentphaseduringtheinsitureactionofsinteringwiththedifferentingredientswerediscussedTheresultsshowthat：Afterthebailing，themixedphasesofCu、Till!924、TiCu3weregeneratedAsthet

5、heoreticalcontentofTiB2increasing，thesizeofparticleswasdiminishedThreedifferenttypesofborideweregeneratedaftersintering，namelyTiBl∞，Ti92orTiB25(2)Thebestprocessparametersweresuggested：thetheoreticalcontentofTiB2Was5％；the

6、formingpressurewas800MPa；thesinteredtemperatureWas1273K；theholdingtimeWas45h，onwhichprocessparametersCumatrixcompositereinforcedwithTiBIooWasgotThepropertiesofmaterialswereelectricalconductivity：202％IACS；hardness：161Hv(3

7、)Twokindsofalefurnacemeltinghadbeenused，namelydirectmeltingoflawmaterialsmethodandtwostepmeltingmethodDirectmeltingofrawmaterialsmeantthattheCupowderBaCpowderandpureTipowderweremixedtogetherandputintheelectricarcfumacest

8、obemelteddirectlyCoppermatrixcompositesonlyreinforcedwithTiB2werepreparedThetheoreticalcontentofTiB2Was25％，thepropertiesofmaterialswhichwerepreparedbyarcflunacemeltingwereelectricalconductivity：439％IACS；hardness：134Hv(4)