GO添加量对RGO/Cu复合材料组织与性能的影响

材料导报

2019, Vol. 33

Issue (z1): 62-66

无机非金属及其复合材料

GO添加量对RGO/Cu复合材料组织与性能的影响

洪起虎¹, 燕绍九¹, 陈翔¹, 李秀辉¹, 舒小勇², 吴廷光²

1 北京航空材料研究院石墨烯及应用研究中心,北京 100095
2 南昌航空大学材料科学与工程学院,南昌 330063

Effect of GO Addition on Microstructure and Properties of RGO/Cu Composite

HONG Qihu¹, YAN Shaojiu¹, CHEN Xiang¹, LI Xiuhui¹, SHU Xiaoyong², WU Tingguang²

1 Research Center of Graphene Applications, Beijing Institute of Aeronautical Materials, Beijing 100095
2 School of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063

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摘要利用湿法球磨与复压复烧方法制备RGO/Cu复合材料,研究了GO添加量(0%、0.3%、0.5%、1.0%,质量分数,下同)对RGO/Cu复合材料的组织与性能的影响。结果表明:GO较均匀分布于铜基体中,且能起到细化晶粒的作用。GO的润滑作用促进晶粒滑移与转动,填补了晶粒间隙,提升了复合材料密度,其中0.5% RGO/Cu复合材料的相对密度最大,为99.4%。添加GO后,细化晶粒引起的晶界面积扩大以及基体密度降低都增加了电子的散射,从而导致复合材料导电率下降。细晶强化和复压作用提升了复合材料强度和硬度。与纯铜相比,1.0% RGO/Cu显微硬度(80.6HV)提升了40%;0.3% RGO/Cu的抗拉强度(241.3 MPa)提高了32%。若GO的添加量过大,其团聚使得复合材料的致密度降低,从而导致断后伸长率下降。

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关键词: RGO/Cu复合材料复压复烧显微组织性能

Abstract: RGO/Cu composites were prepared by wet milling and repressing and re-sintering process. The effect of GO addition (0%, 0.3%, 0.5%, 1.0%,wt% ) on the microstructure and properties of RGO/Cu composites was investigated. The results reveal that GO was uniformly distributed in Cu matrix and played a role in refining grain. The lubrication of GO promoted grain sliding and rotation, filled the grain gap and improved the density of materials. The relative density of 0.5wt% RGO/Cu composites was the largest (99.4%). As the GO addition, the grain boundary area expansion caused by refined grain and Cu matrix density decrease increased the scattering of electrons, and results in the composite conductivity decreases. The strength and hardness of composites were improved by fine grain strengthening and repressing process. Compared with pure copper, the hardness of 1.0wt% RGO/Cu composites (80.6HV) was increased by 40%, the tensile strength of 0.3wt% RGO/Cu composites (241.3 MPa) was increased by 32%. However, the excess GO will agglomerate, then decrease composites elongation.

Key words: RGO/Cu composites repressing and re-sintering process microstructure properties

发布日期: 2019-07-05

ZTFLH:

TG146.1+1

作者简介: 洪起虎,硕士,现任中国航发北京航空材料研究院工程师,目前主要致力于石墨烯金属基纳米复合材料和磁性纳米材料的研制及应用研究。燕绍九,博士,毕业于哈尔滨工业大学,现任中国航发北京航空材料研究院研究员,长期从事低维纳米材料制备及应用研究,目前主要致力于石墨烯储能材料,石墨烯金属基纳米复合材料,磁性纳米材料及石墨烯信息材料的研制及应用研究。在国际著名期刊发表学术论文20余篇、专著1部,并担任美国物理协会J. Appl. Phsy. 等期刊审稿人;申请国际专利2项、国家发明专利50余项、国防专利8项;主持和开发重大项目10余项;获得“中航工业航空报国金奖”二等奖。shaojiuyan@126.com

引用本文:

洪起虎, 燕绍九, 陈翔, 李秀辉, 舒小勇, 吴廷光. GO添加量对RGO/Cu复合材料组织与性能的影响[J]. 材料导报, 2019, 33(z1): 62-66.
HONG Qihu, YAN Shaojiu, CHEN Xiang, LI Xiuhui, SHU Xiaoyong, WU Tingguang. Effect of GO Addition on Microstructure and Properties of RGO/Cu Composite. Materials Reports, 2019, 33(z1): 62-66.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2019/V33/Iz1/62

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