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A kind of carbon whiskers in new structure and morphology
Authors:DONG Jian  SHEN Wanci  Hu Xiaofang  ZHANG Baofa  LIU Xuan  KANG Feiyu  Gu Jialin  Chen Nanping
Affiliation:1. Materials Research Center, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2. Department of Industrial Equipment and Control Engineering, South China Technology University, Guanzhou 510641, China
3. Beijing Institute of Aeronautical Materials, POB: 81-26, Beijing 100095, China
Abstract:Carbon whiskers with new structure and morphology were observed when heating the milled graphite. Transmission electron microscopy (TEM) and high resolution electron microscopy (HREM) show that carbon layers are almost perpendicular to the growth axes of carbon whiskers. Field emission scanning electron microscopy (FESEM) indicates that there are spirals appearing on the surface of the whiskers. The structure analysis shows that the growth mechanism of carbon whiskers is related to the trace amount of ZrC in the heated samples.
Keywords:carbon whisker   ball milling   TEM   FESEM   ZrC   X-ray diffraction (XRD).
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