碳纳米管预制块铸造法制备CNTs/AZ91复合材料研究  

Preparation of Carbon Nanotubes/AZ91 Composites by Preform-Casting

作　　者：周国华[1] 曾效舒[2] 余志核[1] 刘焱[1] 宋福康[1] 

机构地区：[1]宜春学院物理科学与工程技术学院,江西宜春336000 [2]南昌大学机电工程学院,江西南昌330031

出　　处：《铸造》2011年第11期1099-1102,共4页Foundry

基　　金：江西省教育厅科技研究项目(GJJ09027)

摘　　要：在氩气保护下,采用碳纳米管预制块铸造法制备了碳纳米管/AZ91镁基复合材料。观察和分析了复合材料的微观组织,测试了其室温力学性能,并利用扫描电子显微镜(SEM)和能谱分析(SED)对复合材料拉伸断口形貌进行了观察和分析。研究结果表明:该方法能有效地将碳纳米管添加到镁合金熔体中并且均匀分散;随着碳纳米管的加入,复合材料的晶粒组织得到不断的细化,综合力学性能得到明显提高。The carbon nanotubes （CNTs）/AZ91 magnesium matrix composites were fabricated by pref0rm-casting under the protection of Ar. The microstructure was observed and analyzed. The room temperature mechanical properties of the composites were tested. The tensile fracture was observed and analyzed via scanning electron microscope （SEM） and energy dispersive spectrum analysis （EDS）. The results show that CNTs can be effectively added into magnesium alloy matrix with good dispersion; with the adding of CNTs, the grains of the composites have been refined and their comprehensive mechanical properties have been enhanced siqnificantly.

关 键 词：预制块 碳纳米管 AZ91镁合金 复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]