Osmium - hafnium is a binary inorganic compound, osmium and hafnium intermetallic compound with the formula HfOs, crystals.
| Osmiigafny | |
|---|---|
| Are common | |
| Systematic name | Osmiigafny |
| Traditional names | Hafnium osmium |
| Chem. formula | Oshf |
| Rat formula | Hfos |
| Physical properties | |
| condition | crystals |
| Molar mass | 368.72 g / mol |
| Density | 18.0 g / cm³ |
| Thermal properties | |
| T. melt. | 2595 [1] ° C |
| T. decomp. | 2520 [2] ° C |
| Enthalpy of Education | -62 [3] kJ / mol |
| Classification | |
| Reg. CAS number | 12358-86-0 |
Getting
- Fusion of stoichiometric amounts of pure substances:
Physical Properties
Osmium-hafnium forms crystals of cubic syngony , space group P m 3 m , cell parameters a = 0.3239 nm, Z = 1, structure type cesium chloride CsCl [2] .
The compound melts congruently at a temperature of 2595 [1] ° C or is formed by a peritectic reaction at a temperature of 2520 [2] ° C, has a homogeneity region of 45 ÷ 51 at.% Osmium.
Notes
- ↑ 1 2 H. Okamoto. Hf-Os (Hafnium-Osmium) // Journal of Phase Equilibria and Diffusion. - 2007. - T. 28 , No. 6 . - S. 593 . - ISSN 1547-7037 . - DOI : 10.1007 / s11669-007-9201-z .
- ↑ 1 2 3 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Metallurgy, 1997 .-- T. 2 .-- 1024 p. - ISBN 5-217-01569-1 .
- ↑ Djenane Nawel. Utilisation du Modele de Bande-d Pour l'Estimation des Enthalpies de Formation d'Alliages Binaires et Application a l'Etablissement de Diagrammes de Phases . - Université El Hadj Lakhdar Batna, Faculté de science, Département de Physique: Présenté pour obtenir le diplôme de Magister en Physique, 2009.