The Hafnium-platinum phase diagram

Abstract

Phase relationships were determined in the Hf-Pt system at temperatures up to 1690 C using both metallographic and neutron Rietveld refinement techniques. An unusual displacive transformation is observed below 200 C in the rhombohedral compound Hf3Pt4, similar to that recently discovered in the compound Zr3Pt4. Crystallographic data are presented for the compounds HfPt4, HfPt3, Hf2Pt 3, Hf3Pt4, HfPt, and Hf2Pt. A complete phase diagram is presented for the Hf-Pt binary system. © 2013 ASM International.