Crystal structure of two hydrides formed from a Ti-V-Mn BCC solid solution alloy studied by time-of-flight neutron powder diffraction - a NaCl structure and a CaF2 structure

Yumiko Nakamura, Ken Ich Oikawa, Takashi Kamiyama, Etsuo Akiba

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

We investigated the crystal structures of two hydrides formed from a BCC solid solution alloy Ti1.0V1.1Mn0.9 by means of neutron and X-ray powder diffraction. The mono-hydride (Ti1.0V1.1Mn0.9)D2.0 has a pseudo-cubic NaCl structure. The lattice constants are a′ = 0.41278(4) nm and c′ = 0.37685(6) nm, where the c′-axis is 9% shorter than the a′-axis. In this phase the hydrogen atoms occupy octahedral (O) sites surrounded by six metal atoms. The di-hydride (Ti1.0V1.1Mn0.9)D5.4 has the CaF2 structure (a = 0.431935(5) nm) with hydrogen atoms occupying tetrahedral (T) sites. The mono-hydride found in this study is classified into a new category: `a NaCl-type mono-hydride formed from BCC solid solution'.

Original languageEnglish
Pages (from-to)284-289
Number of pages6
JournalJournal of Alloys and Compounds
Volume316
Issue number1-2
DOIs
Publication statusPublished - Mar 2 2001

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this