What is Amorphous Boron Powder? The element boron B is rarely found in nature in its pure form but in the form of proboric acid or borate. Boron is found in 0.001% of the earth's crust. Elemental boron is a black or dark brown powder. Amorphous boron powder is an odorless dark brown powder that is stable in air at room temperature and can be oxidized when heated to 300℃ and ignite when heated to 700℃. As a kind of boron fine chemical product, it is widely used in metallurgy, synthesis, aerospace, and other fields. It is commonly used as a deoxidizer, automobile airbag initiator, rocket fuel ignition agent, etc.
Physicochemical Properties of Amorphous Boron Powder Mr10.81; ρ=2.37g/cm3 (amorphous); Melting point 2177 ~ 2301℃; Boiling point 2550 ~ 2658℃. Boron has a bandgap of 1.50 to 1.56eV, exceeding that of silicon or germanium. It can transmit some infrared light. Although boron is a good conductor of electricity at high temperatures, its conductivity decreases significantly at room temperature. Boron has the largest volume of heat, second only to beryllium by weight. It is slightly soluble in nitric acid, and insoluble in water. The formation of boron trioxide film prevents further oxidation of boron in elemental boron. It can react with fluorine at room temperature and is not corroded by hydrochloric acid and hydrofluoric acid aqueous solution. Boron is insoluble in water, but in powder form is soluble in boiling nitric and sulfuric acid, and most molten metals such as copper, iron, manganese, aluminum, and calcium. Amorphous boron is chemically active. Amorphous boron Powder can form an explosive mixture with air.
Preparation Methods of Amorphous Boron Powder: Molten salt electrolysis, borane cracking, hydrogen reduction, thermal decomposition, magnesium thermal reduction, thermite reduction. Magnesium thermal reduction method: use B2O3 as raw material, Mg powder as the reducing agent, through self-spreading magnesium thermal reduction reaction to obtain reduction products. After hydrochloric acid leaching to the reduction products, the ultra-fine amorphous boron powder is prepared. Applications of Amorphous Boron Powder: Amorphous boron powder has many advantages such as large specific surface area, high calorific value of combustion, and ease to carry, so it is widely used in many fields such as military, aviation and aerospace, automobile, and metallurgical materials. Amorphous boron powder is mainly used in high-energy solid fuel, boron-containing functional ceramics, space technology, explosive catalyst, airbag detonator, superconductivity, borane, a variety of borides, high purity boron halide raw materials, metallurgy, glass, electronics, and other industries. Boron reacts easily with oxygen and nitrogen at high temperatures and is thus used as a degassing agent in steelmaking. Boron fiber has great tensile strength, and composite materials made of epoxy resin are used in aircraft, missiles, and rockets. It also can be used as a protective material in the atomic energy industry.
Main Supplier of Amorphous Boron Powder Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including boron powder, nitride powder, graphite powder, zinc sulfide, Calcium nitride, 3D printing powder, etc. If you are looking for high-quality Amorphous Boron B powder, please feel free to contact us and send an inquiry.
