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作 者:常庆明[1,2] 李宗伦 许芳宇 CHANG Qingming;LI Zonglun;XU Fangyu(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China)
机构地区:[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081 [2]武汉科技大学材料与冶金学院,湖北武汉430081
出 处:《热加工工艺》2022年第14期70-73,77,共5页Hot Working Technology
摘 要:以改进Hummer法制备的氧化石墨烯作为增强体,采用静电自组装技术得到氧化石墨烯/铝基粉体,使用管式气氛炉在H2下还原复合粉体,采用粉末冶金和放电等离子烧结(SPS)技术,制备石墨烯增强铝基复合材料,并利用SEM、XRD、拉曼光谱和压缩测试对复合材料的微观结构和综合性能进行了研究。结果表明:石墨烯均匀的分散在基体中,能显著地提高复合材料的性能。当石墨烯质量分数为1wt%时材料性能最佳,硬度达到了31.10 HV,较纯铝的提升了135%;材料压缩强度为217 MPa,较纯铝的提升了162%,综合性能得到显著提升。Using graphene oxide prepared by improved Hummer method as reinforcer, Graphene oxide/aluminum based powder was obtained by electrostatic self-assembly technique. The composite powder was reduced under H2by using a tube-type atmosphere furnace. Graphene reinforced aluminum matrix composites were prepared by powder metallurgy and spark plasma sintering(SPS). The microstructure and comprehensive properties of the composites were studied by SEM, XRD,Roman spectra and compression test. The results show that, graphene is uniformly dispersed in the matrix and the properties of the composites can be significantly improved. When the mass fraction of graphene is 1wt%, the properties of the material are the best, the hardness reaches 31.10 HV, which is 135% higher than that of pure aluminum. The compressive strength of the material is 217 MPa, which is 162% higher than that of pure aluminum, and the comprehensive properties are significantly improved.
分 类 号:TB333.12[一般工业技术—材料科学与工程]
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