Hydrogen absorbing zirconium alloy

Details Hydrogen absorbing zirconium alloy Hydrogen absorbing zirconium alloy

1985-10-22

1987-04-28

Brody, Christopher W.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite powder

420583, 420900, 423648R, C01B 600, B22F 102

Patent

active

046614150

ABSTRACT:
A zirconium alloy having a plateau region of equilibrium hydrogen dissociation pressure and a small hysteresis, whose hydrogen dissociation pressure is in a range of 0.6 to 3 atm at 20.degree. C., 1 to 5 atm at 40.degree. C., and 1 to 17 atm at 80.degree. C., the activation of which can be effected according to a single procedure of vacuum evacuation at room temperature and pressurization under a hydrogen pressure of 30 atm at room temperature, and which is comparable or superior in the rates of hydrogen absorption and release, the maximum hydrogen absorbing capacity and effective hydrogen releasing capacity to conventional zirconium alloys. A hydrogen absorbing and releasing material comprising an alloy as mentioned above and thin films of one element selected from Pd, Cu, and Ni, which allows only hydrogen to permeate, and covering the surfaces of particles of the alloy.

REFERENCES:
patent: 4163666 (1979-08-01), Shaltiel et al.
patent: 4489049 (1984-12-01), Forester et al.
Jacob et al, "Hydrogen Absorption in (Zr.sub.x Ti.sub.1-x)B.sub.2 (B.tbd.Cr, Mn) and the Phenomenological Model for the Absorption Capacity in Pseudo Binary Laves Phase Compounds, J. Less Comm Metal 73 (1980) pp. 369-376.
Pick et al, "Enhancement of Hydrogen Uptake Rates for Nb and Ta by Thin Surface Overlayers.
Journal of the Less-Common Metals--Racah Institute of Physics--D. Shaltiel--pp. 329-338.

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