Characterization of diamond MWCNTs composite fiber synthesized under high pressure and high temperature

摘要：

A regrown composite fiber was synthesized during the sintering of diamond under high pressure 5.8 GPa and high temperature 1500 ℃ for 1 min, using 3wt% MWCNTs as additive. SEM observation of the fiber after alkali and acid treatment revealed that the outer layer of the fiber is composed of nano-polycrystalline diamond. EDS, XPS, XRD and Raman spectrum analysis further identified that the fiber is composed of MWCNTs in the inner part and nano-polycrystalline diamond in the out layer. It is proposed that the untransformed MWCNTs may act as a template for the regrown outer layer of nano diamond fiber under high pressure and high temperature.

关键词： Mullti-walled carbon nanotubes (MWCNTs) Nano-polycrystalline diamond fiber High pressure /high temperature (HP-HT) Sintering

作者: Deng Fuming Lu Xuejun Liu Ruiping Xu Guojun Chen Quwu Li Wenzhu

作者单位: Department of Materials Science and Engineering, China;University of Mining and Technology, Beijing Department of Materials Science and Engineering, China;University of Mining and Technology, Beijing Department of Materials Science and Engineering, China;University of Mining and Technology, Beijing Beijing Institute of Electro-machining. Beijing 100083. China Department of Physics, Zhejiang University, Hangzhou 310027, China

会议类型: 国际会议

会议名称: 第五届郑州国际超硬材料及制品研讨会

会议地点: 郑州

会议语种:英文

页码: 62-67

在线出版日期: 2008-09-05（万方平台首次上网日期，不代表论文的发表时间）