Thermal desorption of hydrogen at the titanium hydride-oxide interface

Bun Tsuchiya, Shinji Nagata, Naofumi Ohtsu, Kentaro Toh, Tatsuo Shikama

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Changes in hydrogen distribution in δ-phase titanium hydrides (TiH1.92-1.95), covered with titanium oxide layers (TiO and TiO 2), were investigated by elastic recoil detection analysis (ERDA) after isochronal and isothermal annealing experiments. The hydrogen concentration near to the surface of the hydride exponentially decreased as a function of annealing time in the temperature range from 423 to 523 K. The result shows that the thermal desorption of hydrogen from the hydride is governed by first-order reaction kinetics and greatly depends on the thermal detrapping process. The thermal detrapping rates of hydrogen at the hydride-oxide interface were estimated and their activation energy was determined to be 1.3 ± 0.2 eV.

Original languageEnglish
Pages (from-to)196-198
Number of pages3
JournalMaterials Transactions
Volume46
Issue number2
DOIs
Publication statusPublished - 2005 Feb
Externally publishedYes

Keywords

  • Elastic recoil detection
  • Isothermal annealing
  • Thermal desorption
  • Thermal detrapping
  • Titanium hydride
  • Titanium oxide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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