Interaction of R1 – xZrxSi (R = La, Ce, Nd, Dy; x = 0–0.05) Silicides with Hydrogen

Abstract

The interaction of R_{1 – x}Zr_x (R = La, Ce, Nd, Dy; x = 0–0.05) silicides with hydrogen has been studied at hydrogen pressures of up to 250 MPa. At a high pressure and a temperature of 20°C, hydrogen solubility in the solid phase is very low. Raising the reaction temperature leads to disproportionation of the silicides. According to X-ray diffraction data, the disproportionation reaction yields a rare-earth hydride and RSi₂ disilicide.