The possibility of formation of amorphous phase in La-Ni-B system by melt-spun technique has been investigated. It is found that the amorphous phase was formed in a relatively wide compositional range and composition forming amorphous phase nearest LaNis compound is LaNiB. The PCT curves of the amorphous ribbons neither have plateau pressure nor almost absorb hydrogen. In addition LaNi64 B1. 2 ribbons start to absorb hydrogens after crystallizing at 1073K. The amount of absorbed hydrogen is about 0. 7mass% at 2. 0MPa, which is almost half of that of the LaNis compound. However, after 30 hydride-dehydride cycle test, crystallized LaNi 6. 481. 2 ribbons show less degradation in comparison with LaNis alloys.
- Hydrogen absorption properties
- La-ni-b amorphous alloys
- Melt-spun technique
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