Hydrogen absorbing alloy

Details Hydrogen absorbing alloy Hydrogen absorbing alloy

1992-10-19

1994-04-19

Dean, R.

Alloys or metallic compositions

Nickel base

Rare earth containing

420900, 429218, C22C 1903

Patent

active

053043456

ABSTRACT:
A hydrogen absorbing alloy having a crystal structure of CaCu.sub.5 -type hexagonal system and represented by the general formula Re.sub.1-x Y.sub.x (Ni.sub.5-y G.sub.y).sub.z wherein Re is one of La, Ce, Nd, Pr, misch metal and lanthanum-rich misch metal, Y is yttrium, Ni is nickel, and G is an element capable of forming an intermetallic compound or complete solid solution in corporation with Ni or a mixture of such elements, and x, y and z are in the ranges of 0<x.ltoreq.0.6, 0<y.ltoreq.1 and 0.8<z.ltoreq.1.2, respectively. This alloy has a high equilibrium hydrogen desorbing pressure at room temperature, a great capacity to absorb hydrogen and high durability to repeatedly absorb and desorb hydrogen.

REFERENCES:
patent: 4378331 (1983-03-01), Bruning et al.
patent: 4668310 (1987-05-01), Kudo et al.
patent: 4925748 (1990-05-01), Ikoma et al.
H. H. Van Mal; K. H. Buschau and A. R. Miedema, "Hydrogen Absorption in LaNi.sub.5 and Related Compounds; Experimental Observations and Their Explanation", Journal of Less Common Metals 35 (1974) pp. 65-76.

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