納米氧化鋯增強(qiáng)銅基復(fù)合材料研究.pdf

1、∞吐四趔⑧天畢又摹十固近代第一所大學(xué)碩士學(xué)位論文一■R_■■0■爿，：●■_■■0■■_學(xué)科專業(yè)：絲墊芏作者姓名：高昌指導(dǎo)教師：鄭鶯副教捂天津大學(xué)研究生院2005年12月ABSTRACTThellanozirconiareinforcedCumatrixcompositesweremadebypowdermetallurgymethodTheinfluenceofpressureandthecontentofZr02ontheperfo

2、rmanceofthecompositewerestudiedTheresultsshowthattheCuZr02compositehasthebestsyntheticphysicalpropertywhenthecontentofZr02reaches8percentDistributionofNanoZr02incopperisdispersedwhichcanpreventthemovementofdislocationand

3、theslippingofgrainboundarysoastoenhancethestrengthandtheheatresistanceofthecompositeaswellasitshardnessunderhi曲conductanceBythewayonthefoundationofnanonmomareinforcedCumatrixcomposites，Anovelselflubricationcoppermarxcomp

4、ositewithhighmechanicalintens塒andgoodperformanceofwearandfrictionhasbeenpreparedinthispaperWehavereviewedthematerial’Scomponent，technologycapabilityandmicrocosmictissueThiskindofselflubricationcoppermatrixcompositeshaveb

5、eenfabricatedbypowermetallurgyrouteApinon—diskweartestingmachineWasemployedtoevaluateit’Sweal“resistance，thewomsurfaceswereexaminedbyscanningelectronmicroscope，thenitswearmechanismwasdiscussedOrthogonalexperimentindicate

6、dthattheinfluencesofZr02andMoS2ontribotogicalpropertiesaremorenotablethantheinfluenceofgraphiteTheselflubricationcoppermarxcompositeshavetheoptimaltribologicalpropertieswhenthecompositionsale：Cu87％，Zr025％，C5％MoS23％Keywor