The dilation of brittle and ductile porous intermetallic samples during reversible hydrogenation is investigated. An effect of partial and full inverse deformation of porous intermetallic samples during hydrogenation-dehydrogenation was observed and the magnitude of the inverse deformation is determining by the nature of the hydride material and the completeness of hydrogenation and does not depend on system geometry and process parameters. Irreversible deformation is due to cracking of intermetallic particles, and its share of the total deformation is a measure of the porous samples destruction in the hydrogenation-dehydrogenation.
The peculiarities of interfacial interaction during the intermetallic-metal composites synthesis are established. Developed the basic principles of obtaining sintered intermetallic micro-carcass sorbents with high thermal conductivity and nonbreakable during hydrogenation:
• minimization of diffusive interfacial interaction in sintering and transformation of interacting systems to the pseudononinteracting achieved in reducing the interfacial surface by changing the amount of intermetallic inclusions;
• the decrease the destructive action of hydrogenating intermetallic inclusions on a porous metal matrix is achieved by using porous intermetallic inclusions.
A new composite material structure which is a porous metal matrix with uniformly distributed therein porous intermetallic inclusions and ways of its realization is developed based on these principles.
It is shown that the rate of hydrogen sorption and desorption by composite 50% TiFe - 50% Ni is much greater than that by TiFe powder due to high effective thermal conductivity of the composite.
A hydride batteries based on microframe composites 50% wt. TiFe - 50% wt. Cu and 60% wt. TiFe - 40% wt. Cu with many times highly hydrogen absorption and desorption rate is designed.
Keywords: hydrogen, hydrogenation, undestroying composite, hydride accumulator of hydrogen