What is BAM AlMgB14 Powder?


Apr 10, 2023

If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net

Introduction to BAM Powder AlMgB14 Magnesium aluminum boride Oder Al3Mg3B56 The common name for this is BAM It is a mixture of aluminum, magnesium, boron. Its nominal molecular structure is AlMgB14 , and its chemical structure is closer to Al0.75Mg0.75B14 .
It is a ceramic alloy with high wear resistance, very low sliding friction coefficient and very high wear resistance. This alloy has a record value at 0.04 in the unlubricated AlMGB14–TiB2 compound and 0.02 when lubricated.
BAM was first described in 1970. It is an orthogonal structure that has four icosahedral B12 unit cells. This super-hard material’s thermal expansion coefficient is comparable to concrete and steel.

Physicochemical properties of BAM AlMgB14 powder
Most super-hard materials feature simple, highly symmetrical, crystal structures such as diamond cubes and sphalerite. BAM has 64 atoms in each cell, but a more complex and low-symmetry crystal structure. The crystal cell’s most distinctive feature is the four boron-containing, orthogonal icosahedrons. Each icosahedron is composed of 12 boron-containing atoms. The eight remaining boron elements connect the icosahedron with the other elements within the cell. The lattice has less than one metal site, so the material is often identified with the molecular formula AlMgB14. But its chemical composition is closer Al 0.75 mg 0.75 B14. This is common with borides (see Boride and boron carbide cristal structures for boron rich metals). BAM cell parameters are: a = 1.0313mm, B =0.8115mnm; C = 0.5848mnm; Z =4 (four structural units per cells), space group Imma and Pearson symbol oI68. Density 2.59 g/cm3. The melting temperature is approximately 2000°C.

BAM has an energy bandgap of 1.5 eV. Resistivity is affected by sample purity and is approximately 104Ohm*cm. The Seebeck coefficient ranges between -5.4 to -8.0 mV/K. This property is beneficial in thermoelectric applications because it results from electron transfer from metal atoms to boron icosahedron.

The hardness and the toughness to break
BAM powders are microhardened to 32-35GPa. You can increase it to 45GPa with nitrization of boron rich titanium alloy. Also, the fracture toughness may be improved by TiB2 or deposition quasi-amorphous BAM materials. It will lose its hardness if you add AlN or TiC. BAM is super-hard by definition if it has a hardness value above 40GPa. BAM-TiB2 Composites are characterized by a 60 vol.% TiB2 content. This is the highest level of hardness and toughness. With a TiB 2 content of 70-80%, the wear rate could be increased by about 10% at the cost of 10% loss. The titanium B2 additve is a wear-resistant metal with a hardness between 28 and 35gpa.

Thermal expansion
AlMgB14’s thermal growth coefficient (TEC, also known by thermal expansion coefficient, or COTE), was 9 x (10-6) (K-1), based on expansion measurements and high temperature X-ray diffraction with synchrotron radiation. This value is very close to the COTE of steel, titanium and concrete. Based on the AlMgB14 reported hardness value and the material used for the wear-resistant coat, the COTE AlMgB14 is useful to determine the method of coating and the performance of parts after use.

BAM and TiB2 are combined in a composite that has a friction coefficient of 0.04-0.05. This value is reduced to 0.02 by water glycol-based oils.
BAM AlMgB14 Powder Properties
Other Names Magnesium aluminum boride, Al3Mg3B56, BAM, AlMgB14
Molecular Weight 202.64
Appearance From gray to black powder
Aluminum Magnesium Boride BAM AlMgB14 Powder

BAM AlMgB14 Pulp Application
BAM is available commercially and is currently being studied for potential applications.
To reduce friction between the parts and improve wear resistance, for example, pumps’ pistons, seals, or blades can be coated with BAM, BAM + TiB2, such as on seals and pistons. Reduced friction means less energy consumption. It is possible to coat cutting tools with BAM. This will decrease the amount of force required to cut an object, prolong tool life, and increase cutting speed. A coating of 2-3 microns thickness has been proven to increase tool efficiency and reduce wear.

BAM AlMgB14 Powder
Price is affected by many factors, including supply and demand, industry trends and economic activity.
If you’re looking for the best, latest BAM AlMgB14 powder price You can email us to request a quote. (brad@ihpa.net)

BAM AlMgB14 Supplier
Technology Co. Ltd. is a trusted global supplier and manufacturer of chemicals and nanomaterials. They have over 12 years experience in producing super-high-quality chemicals, such as silicon powder.
Send us an inquiry if you’re looking for BAM AlMgB14 powder of high quality. (brad@ihpa.net)