Production of Carbon Mesocell by Arc Electric Discharge

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  • Yoshimura Toshihiko
    Department of Mechanical Engineering, Kure National College of Technology
  • Yamashita Youji
    Department of Mechanical Engineering, Kure National College of Technology
  • Inami Kazunori
    Department of Mechanical Engineering, Kure National College of Technology
  • Kato Hiroyuki
    Department of Mechanical Engineering, Kure National College of Technology
  • Tsutsumoto Takahiro
    Machining and Processing Technology Division, Western Hiroshima Prefecture Industrial Research Institute

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説明

The generation of a carbon nanotube and the first stage of carbon nanotube or carbon fiber formation were investigated in arc electric discharge in a gas mixture of helium and atmosphere with a negative carbon electrode containing lithium or potassium. A carbon stick with lithium and a carbon stick with potassium appeared to accelerate the generation of the carbon nanotube. It was found that the generation of the carbon nanotube is restricted in the range of atmospheric partial pressure from 10 kPa to 20 kPa, and an ideal spherical substance with a size from one hundred nanometers to five micrometers was generated. If the atmospheric partial pressure is lower than that range, the spherical substance changes into a carbon nanotube or carbon fiber. The carbon mesocell, which includes various kinds of elements, can be produced by choosing a carbon stick with additional elements.

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