The effect of Ti additions on the hydrogen absorption properties of mechanically alloyed Mg2Ni powders

C. K. Lin, C. K. Wang, P. Y. Lee, H. C. Lin, K. M. Lin

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Abstract

In the present study, mechanical alloying technique was used to prepare (Mg2Ni)100-xTix (x = 0, 2.5, 5, 7.5, and 10 wt.%) powders starting from elemental powder mixture under an Ar atmosphere. The experimental results showed that the absorbed hydrogen content and reversible hydrogen content was 3.14 and 2.40 wt.% for 15 h milled Mg2Ni powders, respectively. The maximum hydrogen absorption content was increased to over 3.8 wt.% with Ti additions. The reversible hydrogen content also increased significantly (18-25%) with Ti additions. Meanwhile, 15 h milled Mg2Ni-Ti powders can absorb more than 3 wt.% of hydrogen within 1000 s. Not only the hydrogen absorption ability but the hydrogen absorption rate were improved by the additions of titanium and MA treatment in Mg2Ni alloy.

Original languageEnglish
Pages (from-to)1102-1106
Number of pages5
JournalMaterials Science and Engineering A
Volume448-451
DOIs
Publication statusPublished - Mar 25 2007
Externally publishedYes

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Keywords

  • Hydrogen absorption
  • Mechanical alloying
  • MgNi
  • X-ray absorption

ASJC Scopus subject areas

  • Materials Science(all)

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