Hydrogen transport and trapping in EUROFER'97

G.A. Esteban, A. Peña, I. Urra, F. Legarda, B. Riccardi

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The gas evolution permeation technique has been used to investigate the interaction of hydrogen with the reduced activation ferritic-martensitic steel EUROFER'97. The measurements were performed over the temperature range of 376-724 K with hydrogen driving pressures ranging from 5 × 104to 1.5 × 105Pa. The resultant diffusive transport parameters are: a diffusivity of D (m2s-1) = 4.57 × 10-7exp(-22.3(kJ mol-1)/RT), a permeability of φ{symbol} (mol m-1Pa-1/2s-1) = 1.03 × 10-8exp(-37.4(kJ mol-1)/RT) and a Sieverts' constant of Ks(mol m-3Pa-1/2) = 2.25 × 10-2exp(-15.1(kJ mol-1)/RT). The resultant trapping parameters are: a trap density of Nt= 1.3 × 1025m-3and trapping energy of Et= 43.2 kJ mol-1. The possible sources of trapping are analysed and the most probable current mechanism in EUROFER'97 postulated. All the hydrogen transport parameters obtained for EUROFER'97 are compared to the available data corresponding to several steels of the same kind. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)473 - 477
Number of pages5
JournalJournal of Nuclear Materials
Volume367-370 A
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 1 Aug 2007
Externally publishedYes

    Fingerprint

All Science Journal Classification (ASJC) codes

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

Cite this

Esteban, G. A., Peña, A., Urra, I., Legarda, F., & Riccardi, B. (2007). Hydrogen transport and trapping in EUROFER'97. Journal of Nuclear Materials, 367-370 A(SPEC. ISS.), 473 - 477. https://doi.org/10.1016/j.jnucmat.2007.03.114