Evaluation of mechanical property in matrix of metallurgical coke by nano-indentation method

Tomoki Ogata, Kenta Ueoka, Yoshio Morozumi, Hideyuki Aoki, Takatoshi Miura, Kazuya Uebo, Koichi Fukuda

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

The elastic modulus of coke matrix is measured with a nano-indentation method to investigate the effect of coal brands, blending conditions, coking temperature and holding time at the final coking temperature on the mechanical property. The elastic moduli of active component and inert carbonized at 880°C are 26-28 GPa and 45-48 GPa, respectively, regardless of coal brands and blending conditions. The rise in the final coking temperature increases the elastic moduli of both active component and inert. In addition, the elastic moduli of active component are smaller than those of inert. Until the final coking temperature reaches 850°C, the elastic modulus of active component and inert increases with an increase in the holding time. On the other hand, if the final coking temperature is above 850°C, the elastic modulus is hardly dependent on holding time. The elastic modulus of matrix of fusinite is smaller than that of isotropic inert because fusinite has a large amount of small pores. The true elastic modulus of matrix of fusinite is almost equal to that of isotropic inert.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume92
Issue number3
DOIs
Publication statusPublished - 2006 Mar

Keywords

  • Coke
  • Coke matrix
  • Coke strength
  • Elastic modulus
  • Nano-indentation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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