Apparatus for preparing improved porous metal-hydride compacts
AssigneeTechnion Research & Development Foundation Limited
InventorMoshe Ron
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Abstract
The present invention relates to a method and apparatus for preparing metal-embedded porous metallic-hydride (pmh) compacts capable of with standing repeated hydriding-dehydriding cycles without disintegrating. According to the invention, the finely divided hydridable metal alloy hydride is admixed with a finely divided metal selected from Al, Ni, Cu or other transition metals and charged with hydrogen. The resulting mixture is sintered in a furnace in which hydrogen is introduced at a pressure above the equilibrium pressure to the prevailing temperature, mechanical stress being applied simultaneously. The compacts obtained possess outstanding stability, as shown by the fact that they have remained intact even after more than 6000 cycles.
Claims4
A sintering apparatus for preparing improved porous metal hydride compacts consisting of a sintered metal-embedded porous metal hydride, the apparatus comprising:
- (a) means for preparing an intimate mixture, in powder form, of a finely divided hydridable metal alloy hydride and a finely divided metal;
- (b) means for hydriding said powder by charging it with hydrogen, and
- (c) means for sintering the hydrided metal-embedded metal hydride comprising a furnace, means for supplying hydrogen to said furnace at a pressure above equilibrium pressure appropriate to the prevailing temperature, and means for simultaneously applying mechanical stress.
Dependencies are inferred from the claim text.