Crystal structure and protium absorption properties of Ti-Cr-X alloys

Atsunori Kamegawa, Koji Shirasaki, Takuya Tamura, Takahiro Kuriiwa, Hitoshi Takamura, Masuo Okada

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


This paper aims to develop the vanadium free Ti-Cr-X BCC solid solution alloys with high protium content. The effects of additional elements such as Mo, W, Nb and Ta to the phase formation on the Ti-Cr alloys were studied. It was found that Mo-added heat-treated alloys had the flattened plateau regions with the capacity of more than 2.2 mass% protium with maximum of 3.6 mass% protium content, which is equal to that of Ti-Cr-V alloys. It was found that the Ti-Cr-Mo alloys with BCC structure transformed to protide phase with BCC or FCC structure. The plateau pressure of the Ti-Cr-Mo alloys increased with increasing Mo content, but the lattice parameters decreased. The H/M ratio of the alloy with less than 10at%Mo was 1.8 at 10 MPa hydrogen pressure and was almost unchanged with Mo content.

Original languageEnglish
Pages (from-to)470-473
Number of pages4
JournalMaterials Transactions
Issue number3
Publication statusPublished - 2002 Mar


  • Body centered cubic phase
  • Heat-treatment
  • Protium storage alloys
  • Titanium-chromium-molybdenum alloys


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