What is amorphous boron powder? Boronis an enigmatic metal that can exist in several forms (allotropes), each with other physical and chemical properties. Amorphous boron is a lightweight but rugged brown powder generally produced via a reduction of boron oxide with magnesium. SMI Ltd. stocks and supplies both 95% and 99% min. Amorphous boron powder. Our higher purity (99% min.) boron powder contains less than 1.5% magnesium and has an average particle size of 1-5 microns.
ABP particles have a tendency to undergo surface oxidation by atmospheric oxygen and form a B2O3 layer on their outer surface. This B2O3 is sensitive to moisture and gets converted to boric acid (H3BO3). The presence of B2O3 and H3BO3 on the surface of the boron particles poses problems during propellant processing, ignition, and combustion. The hydroxyl functional group of the propellant binder, i.e., Hydroxyl Terminated Poly-Butadiene (HTPB), reacts with B2O3 / H3BO3 to form substantial cross-linking with the boron particles, resulting in an increase in viscosity, making propellant processing difficult. Hence, boric acid is an undesirable impurity in ABP. Various authors have tried to inhibit the surface oxidation of boron particles by using different surface passivating agents such as organic amines, hydroxylamine, or ceramic B4C. Efforts were also made to overcome this problem by using various coating agents adhering to the surface of the boron particles. The coating materials react with the B2O3 layer, facilitating quick removal during combustion. This paper describes a method for assaying the boric acid content of ABP. The presence of boric acid in ABP was also characterized by FTIR and SEM with EDX. In-house boron samples and boron samples obtained from commercial sources were analyzed, and the results have been thoroughly compared. The aging characteristics (concerning boric acid formation) during storage of in-house boron powder were also studied.
Materials and Methods of amorphous boron powder An environmental SEM (made by FEI, Eindhoven The Netherland; Model: Quanta 200) that uses a tungsten filament as the source of electrons was used for particle imaging. The morphological study of boron powder was carried out using an accelerating voltage below the charging limit. An Energy Dispersive Spectroscopy (EDS) study of selected boron samples was carried out using Energy Dispersive X-ray Analysis (EDS) accessories (EDX Inc. USA) fitted to the microscope. A ‘Shimadzu’ infrared spectrometer (FTIR-8400) was used for this characterization. Boron powder samples were thoroughly mixed with dry KBr for a sufficiently homogeneous mixture.
Price of amorphous boron powder Amorphous boron powder particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Amorphous boron powder. A large amount of large amount will be lower. The Price of amorphous boron powder is on our company's official website.
Amorphous boron powder 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 Amorphous boron powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Amorphous boron powder, you are welcome to contact us or inquire at any time.
