Investigation of defects in a mesophase pitch-based graphite at the atomic scale

RONG Ju; ZHU Yuan-yuan; FAN Zhen; FENG Zhi-hai; HE Lian-long

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Article Navigation > New Carbon Mater. > 2017 > 32(2): 168-173

RONG Ju, ZHU Yuan-yuan, FAN Zhen, FENG Zhi-hai, HE Lian-long. Investigation of defects in a mesophase pitch-based graphite at the atomic scale. New Carbon Mater., 2017, 32(2): 168-173.

Citation:

RONG Ju, ZHU Yuan-yuan, FAN Zhen, FENG Zhi-hai, HE Lian-long. Investigation of defects in a mesophase pitch-based graphite at the atomic scale. New Carbon Mater., 2017, 32(2): 168-173.

RONG Ju, ZHU Yuan-yuan, FAN Zhen, FENG Zhi-hai, HE Lian-long. Investigation of defects in a mesophase pitch-based graphite at the atomic scale. New Carbon Mater., 2017, 32(2): 168-173.

Citation:

RONG Ju, ZHU Yuan-yuan, FAN Zhen, FENG Zhi-hai, HE Lian-long. Investigation of defects in a mesophase pitch-based graphite at the atomic scale. New Carbon Mater., 2017, 32(2): 168-173.

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Investigation of defects in a mesophase pitch-based graphite at the atomic scale

1.
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
National Key Laboratory of Advanced Functional Composite Materials, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China

Funds: National Program on Key Basic Research Project (973 Program) (2011CB605800).

Received Date: 2017-01-13
Accepted Date: 2017-04-26
Rev Recd Date: 2017-04-02
Publish Date: 2017-04-28

Abstract

Abstract

A C/C composite as a thermal conducting material was prepared by the impregnation of unidirectional mesophase pitch-based carbon fibers with mesophase pitch and graphitization at 3 000℃. It was thinned to around 10 nm in the direction parallel to the fiber axis by cutting, grinding and ion beam bombardment. Results indicate that mesophase pitch is transformed into hexagonal graphite (HG). However, there is rhombohedral graphite (RG) tens of nanometer thick mingled with the HG. Defects include the glide and rotation structures and grain boundaries.
- Mesophase pitch graphite,
- Steak line,
- Rotational defect,
- Displacive defect,
- Incoherent grain boundary

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References(25)

References

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