Koppers Company, Inc.

Vijay K Sinha

William E Wallace

Faiz Pourarian

Faiz Purarian

A quaternary alloy consisting of zirconium, titanium, manganese and iron is characterized in having C14 hexagonal crystal structure and ZrMn.sub.2 stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.1-x Ti.sub.x Mn.sub.2-y Fe.sub.y wherein 'x' has a value between 0.05 and 0.3 and 'y' has a value between 0.1 and 1, are particularly suitable for use as hydrogen storage materials.

Zirconium-titanium-manganese-iron alloy characterized by ZrMn.sub.2

A ternary alloy comprised of zirconium, manganese and a third element selected from cerium, praseodymium and neodymium is characterized in having AB.sub.2 hexagonal crystal structure and stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.x-1 M.sub.x Mn.sub.2 wherein 'x' has a value between zero and about 0.3 and M is one of the selected metals, are particularly suitable for use as hydrogen storage materials.

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Bihar, India

Vijay K Sinha