NEW RESULTS ABOUT THE OSMIUM-ZIRCONIUM SYSTEM

Authors
MAHDOUK K SUNDMAN B GACHON JC
Citation
K. Mahdouk et al., NEW RESULTS ABOUT THE OSMIUM-ZIRCONIUM SYSTEM, Journal of alloys and compounds, 241(1-2), 1996, pp. 199-209
Citations number
20
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
Journal title
Journal of alloys and compounds → ACNP
ISSN journal
09258388
Volume
241
Issue
1-2
Year of publication
1996
Pages
199 - 209
Database
ISI
SICI code
0925-8388(1996)241:1-2<199:NRATOS>2.0.ZU;2-#
Abstract
A thermodynamic study of the binary system Os-Zr has been carried out. Direct reaction calorimetry at high temperature gave the enthalpies o f formation of Os0.50Zr0.50 (Delta(f)H = -40500+/-1400 J (at. mol)(-1) ), Os0.33Zr0.67 (Delta(f)H = -20500+/-2500 J (at. mol)(-1)) and Os0.24 6Zr0.754 (Delta(f)H = -28800+/-1200 J (at. mol)(-1)). Two intermetalli c compounds have been discovered, OsZr2 and Os17Zr54. A thermodynamic phase diagram computation of the system is proposed.