| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1635285 | Rare Metals | 2006 | 4 Pages |
Abstract
The effect of heat treatment on microstructure, equilibrium hydrogen sorption pressure and plateau slope of LaNi3.8Al0.75Mn0.45 alloy was investigated. X-ray diffraction (XRD) analysis indicates that annealed alloys have single phase and the same hexagonal structure as that of LaN5 alloy (CaCu5 type, P6/mmm). The cell parameters of alloys fluctuate with the increasing annealing temperature. The equilibrium hydrogen pressure and plateau slope are a parabola function with annealing temperature for LaNi3.8Al0.75 Mn0.45 alloy. By this relationship, an appropriate heat treatment temperature for LaNi3.8Al0.75Mn0.45 alloy is determined to about 1220 - 1230 K by mathematic simulation process. However, the maximum hydrogen storage capacity of alloys does not affected by the annealing temperature.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yuwei JIANG, Xiaopeng LIU, Lijun JIANG, Shumao WANG, Hongguang YANG,