Aluminum diboride
- CAS No.
- 12041-50-8
- Chemical Name:
- Aluminum diboride
- Synonyms
- ALUMINUM BORIDE;Einecs 234-923-7;ALUMINIUM BORIDE;ALUMINUM DIBORIDE;aluminium diboride;alumanylidyneborane;aluminumboride(alb2);Aluminum Boride, 99.7%;ALUMINIUM BORIDE GRADE A;ALUMINUM DIBORIDE, -325 MESH
- CBNumber:
- CB9388141
- Molecular Formula:
- AlB2*
- Molecular Weight:
- 48.6
- MOL File:
- 12041-50-8.mol
- Modify Date:
- 2024/1/16 16:51:42
| Melting point | decomposes to AlB12 at >920℃ [CIC73] |
|---|---|
| Density | 3.16 |
| solubility | soluble in dilute HCl |
| form | powder |
| Water Solubility | soluble dilute HCl [CIC73] |
| EPA Substance Registry System | Aluminum boride (AlB2) (12041-50-8) |
Aluminum diboride Chemical Properties,Uses,Production
Description
Aluminum diboride (AlB2) is an inorganic compound with a cyclic structure formed by aluminum and boron, and is a high calorific value boron based fuel with high potential for application. Aluminum diboride has a very similar structure to magnesium diboride. It has low specific gravity and high mechanical properties. The longitudinal tensile strength of unidirectionally reinforced boron-aluminum composites is about 1.2~1.7GPa with different processes and raw materials, and the modulus of elasticity is about 200~240GPa. The longitudinal specific modulus of elasticity and specific strength are about 3~5 times and 3~4 times of those of titanium alloy duralumin and alloy steel respectively.
Chemical Properties
powder(s); made by reaction of the elements above 600°C; high neutron absorption; used as a nuclear shielding material [HAW93] [CIC73]
Physical properties
Aluminum diboride：
Crystal system, lattice
parameters, structure
type, Strukturbericht,
Pearson, space group,
structure type (Z): Hexagonal
a = 300.50 pm;
c = 325.30 pm
C32, hP3, P6/mmm,
AlB type (Z = 1).
Density
(ρ/kg.m–3): 3190; Specific heat capacity
(cP/J.kg–1.K–1): 897.87; Vickers or Knoop
Hardness (HV or
HK/GPa) (/HM): 9.61 HK; Other physicochemical: Temp. transition to AlB at 12
920°C. Soluble in dilute HCl.
Nuclear shielding material (uses).
Uses
Aluminum diboride is a solid material that has a high melting point and hardness. It is commonly used to make high-temperature ceramics and materials that are resistant to wear.
Preparation
Aluminum diboride, AlB2, was first synthesized from the elements, amorphous boron and aluminum powder, using an electric arc furnace in a manner similar to that previously described for ReB2. A second sample was prepared in a tube furnace reaction using aluminum metal powder and amorphous boron sealed in a quartz ampule, with a slight excess of boron (nominally AlB2.2). The ampule was placed in the tube furnace, heated to 910 C, and held at this temperature for 12 h before cooling back to ambient temperature. The synthetic preparation of the commercial sample differs from our preparations, involving a reaction between aluminum metal and boron trioxide (B2O3).
Aluminum diboride Preparation Products And Raw materials
Aluminum diboride Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29884 | 58 | Inquiry |
| Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 | China | 39894 | 58 | Inquiry |
| ANHUI WITOP BIOTECH CO., LTD | +8615255079626 | China | 23541 | 58 | Inquiry |
| Zhuoer Chemical Co., Ltd | 02120970332; +8613524231522 | China | 2904 | 58 | Inquiry |
| ShanDong Look Chemical Co.,Ltd. | +8617653113219 | China | 2737 | 58 | Inquiry |
| Alfa Chemistry | United States | 24072 | 58 | Inquiry | |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | China | 8670 | 58 | Inquiry |
| Hebei Weibang Biotechnology Co., Ltd | +8617732866630 | China | 18154 | 58 | Inquiry |
| LEAPCHEM CO., LTD. | +86-852-30606658 | China | 43340 | 58 | Inquiry |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +undefined18621343501 | China | 33338 | 58 | Inquiry |
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