The Zr-Au system

Heat capacity of the AuZr compound obtained by high-temperature drop calorimetry

“…1 confirms the formation of ZrAu with large grains (100 mm), in agreement with its congruent melting formation [8]. The composition of ZrAu was found to be 50.9 at.% Au.…”

“…Measurements were achieved with a SETARAM drop sensor using alumina as reference material. Samples were dropped into an alumina crucible, which does no react with the ZrAu phase below 1473 K [8].…”

“…However, although the structure of most of the compounds was known, neither their types of formation nor their stability range have been well defined. In 1997, we have re-investigated the ZreAu system [8] showing the existence of two new phases, Zr 3 Au 2 and ZrAu. We precised that the Zr 5 Au 4 phase, which has been previously reported, was mixed up with the solubility limit of Zr in the equiatomic compound.…”

Contribution to the study of the Ce-Zr-Au system

“…Indeed, the DTA curve presents a discontinuity as consequence of the change in heat capacity associated to the triclinic-monoclinic transition. The second at 565 6°C is related to the monoclinic-tetragonal transition of ZrAu [1]. A polymorphic transition of the CeAu phase was first detected at 480°C (on cooling) by Mc Masters et al [6].…”

“…% Au) follows our previous works on the ZrAu system [1] and the determination of the crystal structures of the equiatomic compound, ZrAu [2]. No experimental investigation of phase equilibria in the Ce-Zr-Au ternary system has been published.…”