Abstract: Metal hydrides for absorbing hydrogen which are capable of undergoing repeated charge/discharge cycles of absorbing and desorbing hydrogen at high temperatures and cycles through a high temperature followed by a low temperature. These alloys are intended for use in devices such as heat pumps, heat exchangers, energy storage devices, thermal actuators, temperature sensors and electrochemical cells. The alloys generally comprise the chemical formulaA.sub.1-x B.sub.xwhereA is selected from the group of elements consisting of Ti, Hf, Y,B is selected from the group of elements consisting of Nb, Ni, Co, and Fe,and x is in a range from 0.05 to approximately 0.80, and specific alloys comprise hafnium-nickel (HfNi), hafnium cobalt (HfCo), hafnium-iron (Hf.sub.2 Fe), yttrium-nickel (YNi) and titanium-niobium Ti.sub.1-x Nb.sub.x, where x is in a range of from 0.05<.times.<0.60.

Abstract: A method of manufacturing high-zirconium getters that involves hydrogen pulverization of an entire alloy ingot or ingot pieces. The method offers distinct advantages over techniques that use mechanical means of powder production. The method is useful especially in the manufacture of tough porous getters, of high Zr-content Zr-V alloys that have minor additions of elements such as Fe, Ni, Mn and/or Al.

Abstract: A method of manufacturing high-zirconium getters that involves hydrogen pulverization of an entire alloy ingot or ingot pieces. The method offers distinct advantages over techniques that use mechanical means of powder production. The method is useful expecially in the manufacture of tough porous getters, of high Zr-content Zr-V alloys that have minor additions of elements such as Fe, Ni, Mn and/or Al.

Abstract: The method for extracting hydrogen from a gas stream containing hydrogen with or without other gases by a sorption-desorption process using as the hydrogen sorber a pellet bed of a porous, metallurgically bonded, heat-ballasted hydridable mixture comprising a major proportion of a heat-ballast material and a minor proportion of a hydridable metallic material.

Abstract: Hydrogen gettering alloys which contain nickel, mischmetal, and zirconium, and may optionally contain one or more of cobalt, copper, iron, aluminum, tin, titanium and silicon, overcome many of the deficiencies of the existing getter technology. These alloys may be readily activated for use and regenerated for reuse. They are conveniently prepared using available furnace technology.

Abstract: A porous, metallurgically bonded, heat-ballasted hydridable mixture in pellet form wherein the solid ingredients comprise about 40 vol. % or less of a hydridable metal or alloy and about 60 vol. % or more of a ballast metal powder from the group consisting of nickel, copper, iron and aluminum.

Abstract: A system for hydrogen storage including a hydridable material associated with an amount of inert material of high heat capacity sufficient in amount to prevent, during hydriding, the temperature of the combined hydridable material-inert material from rising beyond that temperature at which the hydride of the hydridable material exhibits a hydrogen pressure equal to the partial pressure of hydrogen fed to the system. The system is insulated to inhibit heat transfer into or out of the system.

Abstract: A process for manufacturing intermetallic compounds of the RB.sub.5 type where R is a mixture of two or more rare earth metals and B is nickel wherein the composition is determined, with respect to the desired desorption plateau pressure at 25.degree. C. in atmospheres absolute by means of the relationshipP.sub.25 =exp(10.60-5.70 X.sub.Ce -10.03 X.sub.La -8.46 X.sub.Pr -7.84 X.sub.Nd)wherein X is the weight fraction of the indicated element and X.sub.La +X.sub.Ce +X.sub.Pr +X.sub.Nd =1.

Abstract: This invention relates to an improved adiabatic process for separating hydrogen from mixed gas streams using hydridable materials as the absorbing medium. The improvement comprises utilizing a composite comprising a thermal ballast in admixture with the hydride material to absorb the heat of reaction and to aid in desorption. By virtue of the intimate contact of the ballast with the hydridable material rapid cycle times plus good bed utilization are achieved.

Abstract: Discloses a hydridable compound of the general formula MNi.sub.x-y Fe.sub.y, where M is mischmetal, x is a number between 4.5 and 5.5 and y is a number between about 0.1 and 1.3.

Abstract: A calcium-nickel compound, CaNi.sub.5, is used to store hydrogen at sub-atmospheric pressures. Charging of the calcium-nickel compound with hydrogen can be accomplished at sub-atmospheric as well as at high pressures. Stored hydrogen can be released from a valved vessel containing calcium-nickel by application of a vacuum or by heating.

Abstract: A nickel-mischmetal-calcium compound is used to store gaseous hydrogen at pressures up to about 15 atmospheres at ambient temperatures. The Ni.sub.5 M.sub.1-y Ca.sub.y compounds have values of y ranging from about 0.2 to about 0.9. Alloys conforming to this formula contain from about 4% to about 27% mischmetal, from about 2% to about 11% calcium, up to about 15% copper, and the balance essentially nickel.

Abstract: A hydride forming alloy comprising of mischmetal, nickel and aluminum, having a composition responding approximately to the formula MM Ni.sub.(y-[x+z]) Al.sub.x Fe.sub.z where x is a number from 0.1 to 1.5, y is a number between 4.5 and 5.5, z is a number between 0 and 0.3 and "x+z" has a maximum of 1.5.

Abstract: Discloses a hydrogen storage module comprising a fluted tube section closed at each end with a gas permeable porous plug and containing a metal adapted to form a hydride or the hydride of such metal.

Abstract: Discloses the use of collapsible hollow structures within a mass of metal-hydride material used in a pressure vessel for storing hydrogen.

Abstract: Discloses the use of spatially extended particles of a solid characterized by a low apparent density distributed within a mass of metal hydride material used in a pressure vessel for storing hydrogen.

Abstract: A hydrogen-storage vessel having particles of hydrideable alloy in a multiplicity of closed containers permeable to hydrogen within the vessel to prevent localized pressure effects acting against the walls of the vessel.