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石墨烯強(qiáng)化CuCr25合金的制備與性能
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武漢大學(xué)動(dòng)力與機(jī)械學(xué)院,武漢大學(xué)動(dòng)力與機(jī)械學(xué)院,武漢大學(xué)動(dòng)力與機(jī)械學(xué)院,武漢大學(xué)納米科學(xué)與技術(shù)研究中心,武漢大學(xué)動(dòng)力與機(jī)械學(xué)院

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國(guó)家自然科學(xué)基金(項(xiàng)目號(hào)51403223)


Preparation and mechanical properties of graphene reinforced CuCr25 composites
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School of Power and Machanical Engineering,Wuhan University,School of Power and Machanical Engineering,Wuhan University,School of Power and Machanical Engineering,Wuhan University,Nano Science and Technology Research Centre,Wuhan University,School of Power and Machanical Engineering,Wuhan University

Fund Project:

National Magnetic Confinement Fusion Program (2014GB121001)

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    摘要:

    本文采用高壓低溫SPS燒結(jié)的新工藝制備了高硬度高電導(dǎo)率的CuCr25/石墨烯復(fù)合材料。X射線衍射（XRD）和拉曼分析（Raman）揭示石墨烯在新合金的制備過(guò)程中并未變性亦無(wú)新相產(chǎn)生，利用掃描電鏡（SEM）以及能譜儀（EDS）進(jìn)行形貌分析顯示石墨烯在新合金中分散均勻。性能測(cè)試結(jié)果顯示，在600℃，300MPa條件下經(jīng)SPS燒結(jié)后制得的CuCr25/石墨烯合金，與對(duì)比試驗(yàn)中采用相同工藝制得的未添加石墨烯的CuCr25合金相比，硬度提高了11.3%，電導(dǎo)率下降了4.2%；而與傳統(tǒng)工藝制備的CuCr25合金相比，其電導(dǎo)率和硬度則分別提高了35%和48%，表明成分和工藝的改進(jìn)對(duì)性能的提高均有貢獻(xiàn)。

    Abstract:

    Novel graphene reinforced CuCr25 matrix composites (GCMC) with high hardness and conductivity are successfully prepared by spark plasma sintering (SPS) under high pressure and low temperature after low speed ball-milling mix. It is confirmed that the graphene is remained and no new phase is found by X-ray diffraction and Raman spectroscopy. Structural characterization of GCMC is performed using field emission scanning electron microscope（SEM） and energy dispersive spectroscopy（EDS）, which reveals that the graphene is homogeneously distributed in matrix after sintering process. The hardness of GCMC with 1wt.% graphene sintered under 300MPa and 600°C is increased by 11.3% than the values of CuCr25 alloys fabricated by the same method, though the conductivity is decreased by 4.2%. Comparing with the CuCr25 alloys consolidated by conventional method, the conductivity and hardness of new-type GCMC are about 1.35 and 1.48 times higher respectively, which indicates that the additional phase and new process all make contributions to the enhancement of GCMC.

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肖文凱,穆迪琨祺,翟顯,阮學(xué)鋒,王國(guó)棟.石墨烯強(qiáng)化CuCr25合金的制備與性能[J].稀有金屬材料與工程,2017,46(12):3862~3867.[Xiao Wenkai, Mu Dikunqi, Zhai Xian, Ruan Xuefeng, Wang Guodong. Preparation and mechanical properties of graphene reinforced CuCr25 composites[J]. Rare Metal Materials and Engineering,2017,46(12):3862~3867.]
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  • 收稿日期:2015-10-08
  • 最后修改日期:2015-11-13
  • 錄用日期:2015-12-08
  • 在線發(fā)布日期: 2018-01-04
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