Aluminum diboride

• CAS: 12041-50-8
• Catalog Number: ACM12041508-2
• Category: Main Products
• Molecular Weight: 37.8g/mol
• Molecular Formula: AlB
• IUPAC Name: alumanylidyneborane
• Canonical SMILES: B#[Al]
• InChI: InChI=1S/Al.B
• InChI Key: DJPURDPSZFLWGC-UHFFFAOYSA-N
• Appearance: Very dark grey powder
• Complexity: 10
• Covalently-Bonded Unit Count: 1
• Exact Mass: 37.990844g/mol
• Formal Charge: 0
• H-Bond Acceptor: 0
• H-Bond Donor: 0
• Heavy Atom Count: 2
• Monoisotopic Mass: 37.990844g/mol
• Rotatable Bond Count: 0

Case Study

Boron and Aluminum Diboride as Additives for Accelerating the Ignition of High-Energy Materials

Korotkikh, Alexander G., et al. Science and technology of energetic materials, 2019, 80(5), 189-193.

Boron and diborides such as aluminum diboride have high heats of oxidation, making them attractive for use as metal fuel additives in high energetic materials (HEMs) and solid propellants. This work investigated HEM samples based on aluminum, amorphous boron, and aluminum diboride micron powders to determine the effects of boron and aluminum diboride on the ignition of HEMs. The results showed that the use of amorphous boron in the HEM samples resulted in a 2.2-2.8 times reduction in the ignition delay time of the samples. Compared to aluminum-based HEM samples, the HEM samples using aluminum diboride powders can reduce the ignition delay time by 1.7-2.2 times at the same heat flux.
Sample preparation and ignition method
· To determine the ignition characteristics, three different HEM samples were used. The first sample (labeled as μAl) consisted of 15 wt.% ammonium perchlorate (particle size 160-315 um), 35 wt.% ammonium nitrate (< 100 um), 20 wt.% energetic binder (PMVT poly methyl-vinyl tetrazole), and 30 wt.% aluminum powder (mean diameter d= 10.8 um). In the other samples, aluminum powder was replaced with boron powder (d=2.0 um), aluminum diboride powder (d= 6.2 um) made using the SHS method and containing 55.5 wt.% Al and 44.5 wt.% B.
· The ignition process was analyzed using a CO2 laser setup with a wavelength of 10.6 um and power of 200 W. The laser beam diameter at the exit from the translucent mirror of the CO2 laser was roughly the same size as the HEM sample diameter.

Custom Reviews

July 02, 2024

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Excellent Product for High-Temperature Ceramics
As a researcher in the science field, I have found Aluminum diboride from Alfa Chemistry to be an exceptional product for creating high-temperature ceramics. Its high melting point and hardness make it ideal for applications requiring materials that are resistant to wear. I highly recommend this product for any research involving high-temperature materials.