Application of fractography to the study of carbon diffusion in molybdenum

Yutaka Hiraoka, Hiroaki Iwasawa, Takeshi Inoue, Masahiro Nagae, Jun Takada

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Commercial pure molybdenum was immersed in a graphite-filled container and heated in vacuum at temperatures between 1073 and 1573K for 1.2ks. The fracture surface of the carbon-added specimen was examined using a scanning electron microscope (SEM). From the change of fracture mode as a function of distance from the specimen surface, the carbon diffusion distance was estimated. From Arrhenius plots of the carbon diffusion distance and the diffusion temperature we derived a diffusion parameter, like the activation energy for carbon diffusion in molybdenum of 182kJ. This value well agrees with the data that had been previously obtained using chemical composition analysis and/or activation analysis.

Original languageEnglish
Pages (from-to)127-132
Number of pages6
JournalJournal of Alloys and Compounds
Volume377
Issue number1-2
DOIs
Publication statusPublished - Sep 8 2004

Fingerprint

Fractography
Molybdenum
Carbon
Activation analysis
Arrhenius plots
Graphite
Containers
Electron microscopes
Activation energy
Vacuum
Scanning
Temperature
Chemical analysis

Keywords

  • Metals
  • Powder metallurgy
  • Scanning electron microscopy

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Application of fractography to the study of carbon diffusion in molybdenum. / Hiraoka, Yutaka; Iwasawa, Hiroaki; Inoue, Takeshi; Nagae, Masahiro; Takada, Jun.

In: Journal of Alloys and Compounds, Vol. 377, No. 1-2, 08.09.2004, p. 127-132.

Research output: Contribution to journalArticle

Hiraoka, Yutaka ; Iwasawa, Hiroaki ; Inoue, Takeshi ; Nagae, Masahiro ; Takada, Jun. / Application of fractography to the study of carbon diffusion in molybdenum. In: Journal of Alloys and Compounds. 2004 ; Vol. 377, No. 1-2. pp. 127-132.
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