MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Hydrogenation of Body-Centered-Cubic Titanium-Chromium Alloys Prepared by Mechanical Grinding
Nobuhiko TakeichiHiroyuki T. TakeshitaToshio OishiTadashi KanekoHideaki TanakaTetsu KiyobayashiNobuhiro Kuriyama
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2002 Volume 43 Issue 8 Pages 2161-2164

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Abstract

The C15 and C14 intermetallic TiCr2−x (x=0, 0.2 and 0.5) compounds were subjected to grinding in a high-energy ball mill. The X-ray diffraction profiles showed that the crystal structure transformed from C15 and C14 to bcc after mechanical grinding for 57.6 ks. The hydrogenation properties of the TiCr2−x (x=0, 0.2 and 0.5) samples were examined by differential thermal analysis and pressure-composition isotherm measurements. The sample reacted with hydrogen at 5 MPa and 523 K by maintaining the bcc structure. An higher hydrogen content was observed for the sample with the higher Ti content. The maximum hydrogen content of TiCr2.0, TiCr1.8 and TiCr1.5 was found to be about 0.32, 0.36 and 0.47 H/M at 313 K, respectively, at 8 MPa.

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© 2002 The Japan Institute of Metals and Materials
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