Hydrogen cycling induced diffraction peak broadening in C14 and C15 Laves phases

Hydrogen refuelling station with integrated metal hydride compressor: Layout features and experience of three-year operation

“…[21] as Zr and broadening XRD peaks of the AB 2 phase; the latter effect was also observed in Ref. [22]. Thus a contribution of degradation of the AB 2 -type material (factor i) in the drop of the MH compression productivity seems to be unlikely.…”

Structure and hydrogen absorbing properties of ScCrMn alloy

“…Extra lattice strain is usually induced in the hydrogen absorption of the transition and rare earth metal alloys due to inhomogeneous distribution of hydrogen in interstitial sites and formation of various types of defects. For example, strong anisotropic broadening is observed in the hydride of typical hydrogen storage alloy LaNi 5 [18], whereas the line broadening have been observed in the hydrides of several Laves phase alloys [19,20]. However, in the study of a similar hydride of ScFe 2 , though both the alloy and its hydride have shown considerable line broadening, the differences between them are undetected.…”

Hydrogen Compression Materials with Output Hydrogen Pressure in a Wide Range of Pressures Using a Low-Potential Heat-Transfer Agent

“…Water and oxygen can significantly poison Ti-based AB 2 /AB-type alloys [48], while AB 5 -type alloys are easily poisoned by CO at ppm amounts [49]. In comparison to AB 5 -type alloys, the cycle life of AB 2 -type alloys tends to be longer, which may be ascribed to the fewer defects they produce in the process of hydrogen absorption and desorption [50].…”