Pressure-concentration-temperature characterization of St909 getter alloy with hydrogen

F. Ghezzi, C. Boffito

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Abstract

One of the major issues related to the next generation of fusion reactors is tritium recovery and recycling from tritiated water. Among the various approaches proposed, chemical dissociation of tritiated water over active beds based on reactive alloys appears to be a promising solution. It enables, in fact, safe recovery of tritium by exploiting the relatively high equilibrium pressures, even at low concentrations and operating temperature, of selected alloys. This paper presents the results of pressure-temperature-composition measurements carried out on a Zr-Mn-Fe alloy, named St909, candidate for such an application. Equilibrium isotherms have been determined between room temperature and 400°C for low hydrogen concentrations, and at room temperature for higher concentrations, exploring the bi-phasic region. Sieverts' law appears to be obeyed in the low concentration range, at H/A ratios of less than 0.03. Copyright © 1996 Elsevier Science Ltd.
Original languageEnglish
Pages (from-to)991 - 995
Number of pages5
JournalVacuum
Volume47
Issue number6-8
Publication statusPublished - 1996
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

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