In situ observations of silver-decoration evolution under hydrogen permeation: Effects of grain boundary misorientation on hydrogen flux in pure iron

Motomichi Koyama, Daisuke Yamasaki, Tatsuya Nagashima, Cemal Cem Tasan, Kaneaki Tsuzaki

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An in situ silver decoration technique using a light microscope was developed. Hydrogen was introduced from the bottom surface of an annealed pure iron specimen, and its top surface was covered with a chemical solution containing silver ions. Samples were exposed for sufficient time for hydrogen permeation to occur from the back to the top surface. The resultant in situ silver decoration visualized that the hydrogen flux through low-angle grain boundaries is lower than that observed at high-angle grain boundaries. The in situ silver decoration technique can be used for kinetic analysis of solute hydrogen in ferritic iron and steels.

Original languageEnglish
Pages (from-to)48-51
Number of pages4
JournalScripta Materialia
Volume129
DOIs
Publication statusPublished - Mar 1 2017

Fingerprint

Silver
Permeation
misalignment
Hydrogen
Grain boundaries
Iron
grain boundaries
silver
Fluxes
iron
hydrogen
Steel
solutes
Microscopes
microscopes
steels
Ions
Kinetics
kinetics
ions

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

In situ observations of silver-decoration evolution under hydrogen permeation : Effects of grain boundary misorientation on hydrogen flux in pure iron. / Koyama, Motomichi; Yamasaki, Daisuke; Nagashima, Tatsuya; Tasan, Cemal Cem; Tsuzaki, Kaneaki.

In: Scripta Materialia, Vol. 129, 01.03.2017, p. 48-51.

Research output: Contribution to journalArticle

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