Chemistry:Barium hexaboride
From HandWiki
| Names | |
|---|---|
| IUPAC name
Barium boride
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| Other names
Barium hexaboride
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| Identifiers | |
PubChem CID
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| Properties | |
| BaB6 | |
| Molar mass | 202.193 g/mol |
| Appearance | Black, cubic substance |
| Density | 4.36 g/cm3 |
| Melting point | 2,270 °C (4,120 °F; 2,540 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Barium hexaboride is a hard material with a high melting point.[1] It can be formed by passing a barium vapour at >750 °C over boron crystals:
- Ba + 6B → BaB
6
However, it can also be formed by reacting barium chloride with boron in two stages: firstly at 900 °C for 30 minutes and then at 1,500 °C for 60 minutes.
Potential applications
Barium hexaboride has been considered as a candidate for use in hot-cathode electron guns.
References
- ↑ Massidda, S.; Monnier, R.; Stoll, E. (October 2000). "Electronic structure of barium hexaboride" (in en). The European Physical Journal B 17 (4): 645–649. doi:10.1007/s100510070103. ISSN 1434-6028. http://link.springer.com/10.1007/s100510070103.
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