石墨烯/氧化铝复合材料制备方法的对比研究  

Comparative Study on Fabrication Approaches for Graphene/Alumina Composites

作　　者：李刚[1] 李兵[3] 刘剑[2] 苏颖[2] 周宇 杨屹[2] 杨刚[2] LI Gang;LI Bing;LIU Jian;SU Ying;ZHOU Yu;YANG Yi;YANG Gang(Luzhou Vocational and Technical College,Luzhou 646600,China;School of Manufacturing Science and Engineering,Sichuan University,Chengdu 610065,China;Chengdu Aeronautic Polytechnic,Chengdu 610100,China;Guangdong Midea Microwave and Electrical Appliances Manufacturing Co.,Ltd.,Foshan 528311,China)

机构地区：[1]泸州职业技术学院,四川泸州646600 [2]四川大学制造科学与工程学院,四川成都610065 [3]成都航空职业技术学院,四川成都610100 [4]广东美的厨房电器制造有限公司,广东佛山528311

出　　处：《热加工工艺》2018年第16期126-129,共4页Hot Working Technology

基　　金：国家自然科学基金青年基金资助项目(51605317);国家自然科学基金资助项目(51675357)

摘　　要：分别利用等离子电火花烧结（SPS）和管式炉气氛烧结技术,制备了石墨烯/氧化铝复合材料。分析对比了两种方法下制备的烧结体的微观组织和力学性能。研究显示：石墨烯均匀地分散在烧结体中,结合超声和球磨的分散工艺能较好实现石墨烯在陶瓷颗粒中的分散。管式炉烧结和SPS都可以实现石墨烯/氧化铝复合材料的致密化,烧结体的相对密度均可达97%以上。且通过管式炉烧结制备的样品与SPS制备的样品具有相近的力学性能,其中韧性可达4MPa·m^1/2左右,硬度可达17 GPa以上。SPS可在短时和较低温度下完成石墨烯与陶瓷粉体的烧结,其烧结过程对管式炉的烧结工艺具有重要的指导意义,而管式炉烧结则有望实现高性能石墨烯/陶瓷生物医用复合材料的批量生产。The graphene/alumina composites were prepared by using spark plasma sintering（SPS） and tube furnace atmosphere sintering techniques respectively. The microstructure and mechanical properties of sintered body prepared by the two methods were analyzed and compared. The research shows that graphene is uniformly dispersed in the sintered body. The dispersion of graphene in ceramic particles can be realized by the combination of ultrasonic and ball milling, and the densification of graphene/alumina composites can be realized by tube furnace sintering and SPS, and the relative density of the sintered bodies can be over 97%. Compared with the samples prepared by SPS, the samples prepared by the tube furnace have similar mechanical properties, the toughness can reach about 4 MPa·m^1/2, and the hardness is up to 17 GPa. SPS can finish sintering of graphene and ceramic powders in short time and low temperature, and the sintering process is of great significance to the sintering process of tubular furnace. The tube furnace sintering is expected to achieve batch production of high-performance graphene/ceramic biomedical composites.

关 键 词：石墨烯 复合材料 烧结 

分 类 号：TB333.21[一般工业技术—材料科学与工程]