Hydrogen-absorbing alloy

Details Hydrogen-absorbing alloy Hydrogen-absorbing alloy

1996-07-12

1999-10-19

Sheehan, John

Metal treatment

Stock

Titanium, zirconium, or hafnium base

148671, 420417, 420900, 429218, 429224, C22C 1400

Patent

active

059682914

ABSTRACT:
This invention relates to a hydrogen-absorbing alloy, and particularly provides a hydrogen-absorbing alloy having a body-centered cubic structure which has a periodical structure formed by spinodal decomposition, has a large hydrogen storage amount, has excellent hydrogen desorption characteristics and can mitigate activation conditions, the alloy comprises at least two elements of alloy components, wherein the relational curve between chemical free energy of solid solutions and an alloy composition has a shape describing an upwardly convexed curve, or said alloy comprises two solid solutions having a regular periodical structure formed by spinodal decomposition within a region satisfying the relation d.sup.2 G/dX.sub.B.sup.2 <0 (where G is chemical free energy and X.sub.B is a solute alloy concentration) as the principal phase.

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