THE Ni–Zr PHASE DIAGRAM IN THE RANGE 25–60 at.% Ni

   

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2019, #07/08
http://www.materials.kiev.ua/article/2866

Abstract

The constitution of the Ni–Zr phase diagram in the range 25–60 at.% Ni was refined using physicochemical analysis methods (metallography, X-ray diffraction, differential thermal and electron microprobe analyses). The Zr2Ni and ZrNi phases are shown to melt at a temperature of about 100 and 30 ºC lower than accepted previously. Upon analysis of the published data and our own experimental results, we concluded that the eutectic interaction between the Zr2Ni and ZrNi phases was not adequately confirmed. A modification of the equiatomic phase with a cubic lattice is found for the first time.


CONGRUENT MELTING, NICKEL, PERITECTIC REACTION, STATE DIAGRAM, ZIRCONIUM