Abstract

We have determined conditions for the preparation of hydride phases with the composition Zr2NiH∼5 by reacting the intermetallic compound Zr2Ni with hydrogen or ammonia and identified the products of the reaction between the intermetallic compound and ammonia in the temperature range 150–500°C in the presence of NH4Cl as an activator. The results demonstrate that the use of ammonia at 500°C leads to decomposition of the intermetallic compound and formation of zirconium hydride, zirconium nitride, and metallic nickel.

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