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ID:32466100
大小:3.67 MB
页数:63页
时间:2019-02-06
《燃烧反应原位合成双相陶瓷增强铜基复合材料》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、武汉理1:大学硕士学位论文摘要本论文研究(TiB2+A1203)双相陶瓷颗粒增强铜基复合材料的制备技术及制备材料的组织和性能。通过自蔓延高温合成(SHS)和热压烧结相结合的技术方法,采用B203、Ti02、AI粉末、Cu粉末为原料,制备出一种具有良好的电导率、热导率和良好的耐磨损性能的颗粒增强铜基复合材料。采用XRD、SEM等分析测试技术对自蔓延高温合成的复合粉术进行检测,结果表明:在(TiB2+A1203)陶瓷颗粒表面成功镀覆金属铜,结合良好。通过光学显微镜、TEM、XRD等对制各的(TiB2+A1203)陶瓷颗粒增强铜基复合
2、材料块体材料进行了金相组织、微结构分析,结果表明:材料金相组织叶J弥散分布着团簇状的3、性能的研究,结果表明:自蔓延高温合成(SHS)合成原始粉料中Cu的最佳配比为60w1%,制备(TiB2+A1203)颗粒增强铜基复合材料的最佳陶瓷含量为2.0wt%,最佳烧结工艺是烧结温度为950。C,压力为30MPa,保温和保压时间为2h。提高陶瓷相的含量,会增加铜基复合材料的耐磨损性能和断裂强度但会降低材料的电导率和热导率;提高烧结温度和和保温时间,会增加铜基复合材料的电导率和热导率但耐磨损性能和断裂强度逐渐减小;所制各的铜基复合材料软化温度均大于900℃。关键字:双相增强,燃烧反应,原位合成,铜基复合材料武汉理1人学硕十学4、位论文AbstractInthispaper,thepreparation,thestructureandtheperformanceof(TiB2+A1203)Dual·phaseCeramicReinforcedCopper-basedCompositeswerestudiedBythemethodsofSHSandHP,akindofparticle—reinforcedCopper-basedCompositewithexcellentelectricconductivity,thermalconductivity,an5、dwear-resistancewaspreparedfromB203、Ti02、A1、Cuastherawmaterials.ThecompoundpowderbySHSwascheckandmeasurewiththetestingmethodofXRD、SEM、etcTheresultsshowedthatthesurfaceof(TiB2+A]203)ceramicwassuccessfullycoveredbycopperandthecombinationwasgood.Withregardtotheanalysiso6、fthephases,microstructureofthebulkmaterialof(TiB2+A1203)Dual-phaseCeramicReinforcedCopper-basedCompositesthatprepared,themethodofopticalmicroscope、TEM、XRDwasused.Theresultsshowedthattheparticleof(TiB2+A1203)inagglomeratiorwasdistributedinthephasesofthemetal;TEMshowed7、thattheparticleof(TiB2+A1203)in1~2“mwaspresentinthematrix,andtheinterfacebetweentheparticlesandthematrixiscleanThereinforcedparticleshaveagoodperformanceinthereinforcementofmatrix.Dryslidingwearbehaviorof(TiB2+A1203)Dual.phaseCeramicReinforcedCopper-basedCompositeswa8、sstudiedbyusingthepin—on—disktestrig.Theresultsshowedthattheparticleof(TiB2+A1203)promotedthewear-resistanceofthematrixofClLWiththe
3、性能的研究,结果表明:自蔓延高温合成(SHS)合成原始粉料中Cu的最佳配比为60w1%,制备(TiB2+A1203)颗粒增强铜基复合材料的最佳陶瓷含量为2.0wt%,最佳烧结工艺是烧结温度为950。C,压力为30MPa,保温和保压时间为2h。提高陶瓷相的含量,会增加铜基复合材料的耐磨损性能和断裂强度但会降低材料的电导率和热导率;提高烧结温度和和保温时间,会增加铜基复合材料的电导率和热导率但耐磨损性能和断裂强度逐渐减小;所制各的铜基复合材料软化温度均大于900℃。关键字:双相增强,燃烧反应,原位合成,铜基复合材料武汉理1人学硕十学
4、位论文AbstractInthispaper,thepreparation,thestructureandtheperformanceof(TiB2+A1203)Dual·phaseCeramicReinforcedCopper-basedCompositeswerestudiedBythemethodsofSHSandHP,akindofparticle—reinforcedCopper-basedCompositewithexcellentelectricconductivity,thermalconductivity,an
5、dwear-resistancewaspreparedfromB203、Ti02、A1、Cuastherawmaterials.ThecompoundpowderbySHSwascheckandmeasurewiththetestingmethodofXRD、SEM、etcTheresultsshowedthatthesurfaceof(TiB2+A]203)ceramicwassuccessfullycoveredbycopperandthecombinationwasgood.Withregardtotheanalysiso
6、fthephases,microstructureofthebulkmaterialof(TiB2+A1203)Dual-phaseCeramicReinforcedCopper-basedCompositesthatprepared,themethodofopticalmicroscope、TEM、XRDwasused.Theresultsshowedthattheparticleof(TiB2+A1203)inagglomeratiorwasdistributedinthephasesofthemetal;TEMshowed
7、thattheparticleof(TiB2+A1203)in1~2“mwaspresentinthematrix,andtheinterfacebetweentheparticlesandthematrixiscleanThereinforcedparticleshaveagoodperformanceinthereinforcementofmatrix.Dryslidingwearbehaviorof(TiB2+A1203)Dual.phaseCeramicReinforcedCopper-basedCompositeswa
8、sstudiedbyusingthepin—on—disktestrig.Theresultsshowedthattheparticleof(TiB2+A1203)promotedthewear-resistanceofthematrixofClLWiththe
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