Volume 14 Issue 1
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CAO Li-Min, ZHANG Ming, ZHANG Xiang-Yi, GAO Chun-Xiao, ZHOU Zhen-Hua, ZHANG Jun, DAI Dao-Yang, SUN Li-Ling, WANG Wen-Kui. Phase Transition and Diamond Synthesis of Carbon Nanotubes under High Pressure and High Temperature[J]. Chinese Journal of High Pressure Physics, 2000, 14(1): 33-36 . doi: 10.11858/gywlxb.2000.01.006
Citation: CAO Li-Min, ZHANG Ming, ZHANG Xiang-Yi, GAO Chun-Xiao, ZHOU Zhen-Hua, ZHANG Jun, DAI Dao-Yang, SUN Li-Ling, WANG Wen-Kui. Phase Transition and Diamond Synthesis of Carbon Nanotubes under High Pressure and High Temperature[J]. Chinese Journal of High Pressure Physics, 2000, 14(1): 33-36 . doi: 10.11858/gywlxb.2000.01.006

Phase Transition and Diamond Synthesis of Carbon Nanotubes under High Pressure and High Temperature

doi: 10.11858/gywlxb.2000.01.006
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  • Corresponding author: CAO Li-Min
  • Received Date: 10 May 1999
  • Rev Recd Date: 10 May 1999
  • Publish Date: 05 Mar 2000
  • The phase transition of carbon nanotubes under high pressure and high temperature has been investigated by transmission electron microscope and scanning electron microscope. It is found that the nanotubes are unstable under high pressure and high temperature. When being annealed at the temperature range of 770 ℃ and 950 ℃ under 5.5 GPa, the carbon nanotubes will transform into carbon onions. The diamond is synthesized under the conditions of 1 000 ℃ and 5.0 GPa.The mechanism of the phase transition of carbon nanotubes is well discussed.

     

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