Effects of chemical composition of carbonaceous powder on morphology and thermal properties of graphite blocks

Hsu Jen-Yung; Su Chun-Jen; Yen Yung-Lin; Lee Che-Yun

doi:10.1007/s42823-021-00312-8

Effects of chemical composition of carbonaceous powder on morphology and thermal properties of graphite blocks

Carbon Letters
Abbr : Carbon Lett.
2022, 32(3), pp.797-805
DOI : 10.1007/s42823-021-00312-8
Publisher : Korean Carbon Society
Research Area : Natural Science > Natural Science General > Other Natural Sciences General
Received : September 19, 2021
Accepted : December 1, 2021
Published : May 1, 2022

Hsu Jen-Yung ¹, Su Chun-Jen ², Yen Yung-Lin ³, Lee Che-Yun ⁴

¹New Materials Research & Development Department
²National Synchrotron Radiation Research Center
³Research & Development Department
⁴Research & Development Department, China Steel Chemical Corporation

Accredited

ABSTRACT

Two kinds of mesocarbon microbeads (MCMBs) with different chemical composition have been synthesized. The MCMBs were molded and heat treated at temperatures above 2000 °C to obtain graphite blocks. The effects of chemical composition of MCMBs on the pore morphology, carbon texture and thermal properties of the derived graphite blocks have been explored. The pore morphology was investigated by small angle X-ray scattering technique and a graphitization-induced morphology transition was observed. When the graphitic crystallite size exceeded a threshold value, the association of crystallites and migration of randomly distributed pores took place extensively. For the graphite blocks made of MCMBs which had light components with higher aromaticity value, the growth of crystallites caused a significant enhancement in thermal conductivity for the specimens. However, for the other kind of MCMBs, their light components tended to form solid porous carbon texture after graphitization, and the thermal conductivity coefficients of their graphite blocks could only increase slightly as crystallites grew. It was suggested that the thermal resistance at the granule’s boundary became noticeable in the latter case and thus the growth of thermal conductivity coefficients was prominently hindered.

KEYWORDS

Graphite blocks Mesocarbon microbeads Thermal conductivity Carbon texture Pore morphology

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Total Citation Counts(KCI+WOS) (7) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-07-01)

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Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 4.82

Effects of chemical composition of carbonaceous powder on morphology and thermal properties of graphite blocks

ABSTRACT

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Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (7) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-07-01)

* References for papers published after 2023 are currently being built.

Carbon Letters 2023 KCI Impact Factor : 1.35 KCI-WoS Impact Factor : 4.82

Effects of chemical composition of carbonaceous powder on morphology and thermal properties of graphite blocks

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KCI Citation Counts (2)

WoS Citation Counts (5) This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

Total Citation Counts(KCI+WOS) (7) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (7) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2024-07-01)

REFERENCES (32) * References for papers published after 2023 are currently being built.

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This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2024-07-26)

* References for papers published after 2023 are currently being built.