Dirodin - aluminum - aluminum is a binary inorganic compound of aluminum and rhodium with the formula Al 9 Rh 2 , crystals.
| Dirodin-aluminum | |
|---|---|
| Are common | |
| Systematic name | Dirodin-aluminum |
| Traditional names | Nonaaluminium dirodium |
| Chem. formula | Al 9 Rh 2 |
| Rat formula | Rh 2 Al 9 |
| Physical properties | |
| condition | crystals |
| Molar mass | 448.64 g / mol |
| Density | 4.1 g / cm³ |
| Thermal properties | |
| T. decomp. | 930 ° C |
| Classification | |
| Reg. CAS number | 12408-62-7 |
Getting
- Sintering of stoichiometric amounts of pure substances:
Physical Properties
Dirodioaluminium forms crystals of monoclinic syngony , space group P 2 1 / c , cell parameters a = 0.6352 nm, b = 0.6428 nm, c = 0.8721 nm, β = 94.81 °, Z = 2, type structure dicobalt-aluminum aluminum Al 9 Co 2 [1] [2] [3] [4] .
The compound is formed by a peritectic reaction at a temperature of 930 ° C [5] [6] [7] .
Notes
- ↑ State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
- ↑ H. Okamoto. Al-Rh (Aluminum-Rhodium) // Journal of Phase Equilibria and Diffusion. - 2007. - T. 28 , No. 5 . - S. 485 . - DOI : 10.1007 / s11669-007-9146-2 .
- ↑ B. Predel. Al-Rh (Aluminum - Rhodium) // Landolt-Börnstein - Group IV Physical Chemistry. - 2006. - T. 12A . - S. 1-2 . - DOI : 10.1007 / 10793176_114 .
- ↑ Edshammar Lars-Erik. The Crystal Structure of Rh 2 Al 9 and Ir 2 Al 9 // Acta Chemica Scandinavica. - 1968 .-- T. 22 . - S. 2822-2826 . - DOI : 10.3891 / acta.chem.scand.22-2822 .
- ↑ VG Khoruzhaya, KE Kornienko, PS Martsenyuk, T. Ya. Velikanova. Phase equilibria in the system Al-Rh // Powder Metallurgy and Metal Ceramics. - 2006. - T. 45 , No. 5-6 . - S. 251-258 . - DOI : 10.1007 / s11106-006-0072-3 .
- ↑ Yurechko M.V. Phase and phase transitions in other systems based on aluminum, which are quasiperiodic and sporiently phase with a periodic crystalline structure . - Kiev: Abstract of a dissertation on the health of the science level of a candidate of chemical sciences, 2001.
- ↑ Tamara Ya. Velikanova. Phase Diagram of the Al - Rh System // Powder Metallurgy and Metal Ceramics. - 2001. - T. 40 , No. 7-8 . - S. 374-379 . - DOI : 10.1023 / A: 1013718820535 .