Diberillium niobium is a binary inorganic compound, an intermetallic niobium and beryllium with the formula NbBe 2 , crystals.
Diberillium niobium | |
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Are common | |
Systematic name | Diberillium niobium |
Traditional names | Diberyllide niobium |
Chem. formula | Nbbe 2 |
Rat formula | Be 2 nb |
Physical properties | |
condition | crystals |
Molar mass | 110.93 g / mol |
Density | 5.28 g / cmΒ³ |
Thermal properties | |
T. decomp. | 1630 [1] |
Classification | |
Reg. CAS number | 12009-98-2 |
Content
Getting
- Sintering of stoichiometric amounts of pure substances:
Physical Properties
Diberillium niobium forms gray crystals of cubic syngony , the space group is F d 3 m , the cell parameters are a = 0.6535 nm, Z = 8, and the structure is of the type dimenmium magnesium MgCu 2 [2] .
The compound is formed by a peritectic reaction at 1630 Β° C [1] .
At a temperature of 2.15 K, it transforms into a superconducting state [3] .
Chemical Properties
- Decomposes on heating:
Notes
- β 1 2 State Diagrams of Double Metal Systems / Ed. N.P. Lyakisheva. - M .: Mechanical Engineering, 1996. - T. 1. - 992 p. - ISBN 5-217-02688-X .
- β DE Sands, A. Zalkin, OH Krikorian. The crystal structure of NbBe 2 and NbBe 3 // Acta Crystallographica. - 1959. - T. 12 , No. 6 . - S. 461-464 . - DOI : 10.1107 / S0365110X59001384 .
- β Superconductors