Abstract
New hydrides of Mg-TM-H systems, where TM = Zr, Nb and Mo, have been prepared by using cubic-anvil-type apparatus, and their crystal structure and hydrogen content have been investigated. The high-pressure synthesis was performed at 1073-1173 K under 2-5 GPa. In the Mg-Zr-H system, a new hydride Mg 2Zr 3H y with a monoclinic structure (a = 0.8591(1) nm, b = 0.33539(5) nm, c = 0.5816(1) nm, β = 103.06(3)°) was obtained by exposing a mixture of MgH 2 and ZrH 2 to pressure of 2 to 5 GPa at 1073 K for 2 h. In the Mg-Mo system, a new hydride Mg 3MoH 6 was synthesized by exposing a mixture of MgH 2 and Mo to 5 GPa at 1173 K for 2 h. The hydride was found to have a hexagonal structure (a = 0.49958(6) nm, c = 0.8840(2) nm). In the Mg-Nb-H system, a new hydride Mg 4NbH y was also synthesized by exposing a mixture of MgH 2 and Nb to 5 GPa at 1073 K for 2 h.
Original language | English |
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Pages (from-to) | 1798-1801 |
Number of pages | 4 |
Journal | Materials Transactions |
Volume | 46 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2005 Aug |
Keywords
- High pressure synthesis
- Magnesium-Molybdenum-Hydrogen system
- Magnesium-Niobium-Hydrogen system
- New hydride
- X-ray diffraction
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering