Why aluminum diboride is stable in cold dilute acid?
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Author : Lzh
Update time : 2023-02-06 14:44:56
What is aluminum diboride? Aluminum diborideis a chemical substance, a binary compound formed by aluminum and boron elements. It is a red solid, which loses its surface luster after heating, and is stable in cold dilute acid. It is decomposed in hot hydrochloric acid and nitric acid. The heating reaction obtains it after mixing fine powder of aluminum and boron. It is one of the two compounds of aluminum and boron, and the other is AlB12, which is usually called aluminum borate. AlB12 is a shiny black monoclinic crystal with a specific gravity of 2.55 (18 ℃), insoluble in water; acids and bases are decomposed in hot nitric acid. In structure, B atoms form graphitic sheets with Al atoms between them, which is very similar to the structure of magnesium diboride. The single crystal of AlB2 exhibits metal conductivity on the axis parallel to the hexagonal plane of the substrate.
Preparation of aluminum diboride The precursor reaction raw material is added into the solvent in the liquid phase, and the suspension is uniformly mixed after ultrasonic mixing; Wherein. The precursor reaction raw materials include boron powder and aluminum powder; The uniformly mixed suspension is frozen to solidification, and then the solvent is removed by vacuum freeze-drying technology to obtain the treated precursor reaction raw material; Transferring the treated precursor reaction raw material into a quartz tube; Sealing the quartz tube; The sealed quartz tube is placed in a tubular furnace and sintered at high temperature to prepare aluminum diboride powder. The present invention controls the mixing state of precursor reaction raw materials, thus effectively controlling the morphology of powder prepared by solid phase reaction, and obtains spherical or spheroid aluminum diboride powder with a size of 0.1 μ m~6 μ The size of the powder is uniform and the crystallinity is good.
Structure of aluminum diboride The longitudinal specific elastic modulus and specific strength are about 3~5 times and 3~4 times that of titanium alloy duralumin and alloy steel, respectively. The fatigue property and energy are good, and there is still high strength below 400 ℃. It has been applied to turbojet fan blades and aerospace, aerospace aircraft, and satellite structural parts. The hot-press diffusion bonding method is used to manufacture plates, profiles, and parts with complex shapes; Various profiles can also be manufactured by continuous casting.
Price of aluminum diboride Aluminum diboride particle size and purity will affect the product's price, and the purchase volume can also affect the cost of aluminum diboride. A large amount of large amount will be lower. The price of aluminum diboride can be found on our company's official website.
Aluminum diboride supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including aluminum diboride, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective aluminum diboride, you are welcome tocontact us or inquire at any time.
