The hydrogen storage alloy (Mg2Ni)100-xTix (x = 0, 2.5, 5.0, 7.5 and 10.0at%) powders were synthesized from elemental powder mixture by mechanical alloying (MA) under an Ar atmosphere. The as-milled powders were examined as a function of titanium addition by X-ray diffraction and synchrotron X-ray absorption near-edge structure (XANES) techniques at various milling time. The hydrogen absorption kinetics of the 15 h as-milled powders were evaluated. The maximum hydrogen absorption content of 15 h as-milled Mg2Ni powders can be improved from 3.14mass% to 3.88mass% when 5.0at% of titanium was added. The hydrogenation rate of the Mg 2Ni powder was also obviously enhanced by introducing the titanium into Mg2Ni lattices. More than 20% improvement of hydrogen absorption for Mg2Ni intermetallic powders was achieved by adding titanium.
ASJC Scopus subject areas
- Materials Science(all)
- Metals and Alloys
Chen, C. Y., Wang, C. K., Lee, P. Y., & Lin, C. K. (2007). Hydrogen absorption performance of mechanically alloyed (Mg 2Ni)100-xTix powder. Materials Transactions, 48(12), 3170-3175. https://doi.org/10.2320/matertrans.MER2007169