STUDY OF THE PHASE-FORMING FEATURES IN THE ZRH2-O-2 SYSTEM

Samples of the zirconium oxydihydrides and oxymonohydrides of composit ions ZrH2O0.11-1.10 and ZrH1.0O0.14-1.90, respectively were synthesize d for the investigation of phase-forming processes in zirconium-hydrog en-oxygen systems. For each sample, the phase composition, crystal lat tice constants, specific resistance and electronic work function were determined. It has been shown that for the ZrH2-O-2 system, an increas e of the oxygen concentration causes gradual substitution of the metal lic bonds by covalent and ionic bonds. Copyright (C) 1996 Internationa l Association for Hydrogen Energy