Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film

Y. Hatano, M. Takamori, Kazuhiro Nogita, K. Matsuda, S. Ikeno, K. Watanabe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Plate-type specimens were cut from three different types of tungsten sheets fabricated under distinct rolling and heat treatment conditions in the directions parallel or perpendicular to the rolling planes. Amorphous carbon films were prepared by vacuum deposition on the specimen surfaces. Then, the specimens were heated at 1073 K in vacuum, and reaction products were analyzed by means of X-ray diffraction. The carbide formed was W2C and no peak of WC appeared. The growth rate of W2C was independent of the cutting directions of the specimens, although the grain boundary densities at the specimen surfaces were quite different. On the other hand, the rate of W2C growth was dependent on both reduction and heat treatment conditions, and a specimen with higher hardness showed a higher growth rate. By taking account of the observations by a transmission electron microscope, it was concluded that dislocations play important roles in W2C growth.

Original languageEnglish
Pages (from-to)902-906
Number of pages5
JournalJournal of Nuclear Materials
Volume337-339
Issue number1-3 SPEC. ISS.
DOIs
Publication statusPublished - Mar 1 2005

Fingerprint

Tungsten
Carbon films
Amorphous carbon
Amorphous films
Solid state reactions
Tungsten sheet
Reaction rates
tungsten
reaction kinetics
Heat treatment
solid state
Vacuum deposition
microstructure
Microstructure
carbon
Reaction products
Carbides
Grain boundaries
Electron microscopes
Hardness

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Hatano, Y., Takamori, M., Nogita, K., Matsuda, K., Ikeno, S., & Watanabe, K. (2005). Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film. Journal of Nuclear Materials, 337-339(1-3 SPEC. ISS.), 902-906. https://doi.org/10.1016/j.jnucmat.2004.10.098

Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film. / Hatano, Y.; Takamori, M.; Nogita, Kazuhiro; Matsuda, K.; Ikeno, S.; Watanabe, K.

In: Journal of Nuclear Materials, Vol. 337-339, No. 1-3 SPEC. ISS., 01.03.2005, p. 902-906.

Research output: Contribution to journalArticle

Hatano, Y, Takamori, M, Nogita, K, Matsuda, K, Ikeno, S & Watanabe, K 2005, 'Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film', Journal of Nuclear Materials, vol. 337-339, no. 1-3 SPEC. ISS., pp. 902-906. https://doi.org/10.1016/j.jnucmat.2004.10.098
Hatano Y, Takamori M, Nogita K, Matsuda K, Ikeno S, Watanabe K. Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film. Journal of Nuclear Materials. 2005 Mar 1;337-339(1-3 SPEC. ISS.):902-906. https://doi.org/10.1016/j.jnucmat.2004.10.098
Hatano, Y. ; Takamori, M. ; Nogita, Kazuhiro ; Matsuda, K. ; Ikeno, S. ; Watanabe, K. / Influence of microstructure of tungsten on solid state reaction rate with amorphous carbon film. In: Journal of Nuclear Materials. 2005 ; Vol. 337-339, No. 1-3 SPEC. ISS. pp. 902-906.
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