纳米晶铜中离子注入碳后的组织结构研究  

Study on Morphology Structure of Carbon Ion-implanted Nanocrystalline Copper

作　　者：卫英慧[1] 毕海香[1] 侯利锋[1] 王国栋[1] 许并社[1] 

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《太原理工大学学报》2008年第6期543-547,共5页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(50471070;50644041);教育部新世纪优秀人才基金资助项目(NCET-04-0257);山西省自然科学基金资助项目(20051050);山西省留学回国人员科研基金资助项目(2006-32)

摘　　要：对纯铜进行表面机械研磨处理(SMAT),获得纳米晶表层,且晶粒尺寸沿深度方向逐渐增大。采用离子注入技术在纳米晶纯铜中注入碳,利用透射电子显微镜(TEM)与高分辨电子显微镜(HRTEM)进行原位动态观察。结果表明,碳在基体的表面析出,形成无定形碳膜,在电子束的照射下形成洋葱状富勒烯。同时讨论了离子注入、电子束照射、纳米晶结构及碳原子与铜原子的相互作用对碳洋葱状富勒烯形成的影响。A gradient structure in copper surface was fabricated on a pure copper plate by means of surface mechanical attrition treatment. The microstructure of the surface layer was refined to nanoscale. Then in-situ transmission electron microscope and high resolution transmission electron microscope observation was performed in nanocrystalline pure copper implanted with carbon. The results show that carbon atoms firstly precipitated at the surface, and transformed in to amorphous carbon. Subsequently onion-like fullerenes were formed under the electron-beam irradiation. The effects of ion-implantation, electron-beam irradiation, nanostructured substrate and interaction of C and Cu atoms on the formation of onion-like fullerenes were also discussed.

关 键 词：离子注入 碳 洋葱状富勒烯 纳米晶 表面机械研磨处理 

分 类 号：TG146.2[一般工业技术—材料科学与工程]