A v-al-ni ternary alloy material for hydrogen permeation and a preparation method thereof

Abstract

A V-Al-Ni ternary alloy material for hydrogen permeation and its preparation method are disclosed, relating to the field of hydrogen separation and purification membrane technology. The chemical composition of the alloy is V... 75 Al 10 Ni 15 The preparation method includes: cleaning, drying, and precisely batching high-purity metal raw materials; melting the batched raw materials under vacuum arc to obtain a uniform alloy ingot; wire-cutting the ingot into samples and then grinding and polishing the surface; finally, depositing a Pd catalyst layer onto the polished alloy surface. The alloy prepared by this method has a body-centered cubic structure, exhibiting both excellent resistance to hydrogen embrittlement and a high hydrogen permeability coefficient. Its hydrogen permeability at 673 K is comparable to that of a pure Pd membrane, showing broad application prospects in the field of hydrogen separation and purification.

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