Introduction of boron powder Boron is found in 0.001% of the earth's crust. Boron is a black or silvery grey solid. Crystalline boron is black, second only to diamond in hardness, and brittle in texture. Boron is named Boron, which is derived from the Arabic word meaning "solder". It means that the ancient Arabs already knew that boron sand has the ability to melt metal oxides and is used as a flux in welding. The molecular weight of boron powder is 10.81. ρ2.37g/cm3 (amorphous); 2.34~2.46g/cm3 (crystal). Melting point 2177～2301℃. Boiling point 2550～2658℃. Boron has the largest volume of heat, second only to beryllium in weight heat. Slightly soluble in nitric acid, insoluble in water. Monomeric boron is black or dark brown powder when oxidized in the air due to the formation of boron trioxide film and prevents internal boron continued oxidation. 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, powdered boron is soluble in boiling nitric acid and sulfuric acid, as well as most molten metals such as copper, iron, manganese, aluminium and calcium.
The use of boron powder At high temperatures, boron powder can interact with oxygen, nitrogen, sulfur, halogen and carbon to generate various compounds, can also directly combine with many metals to generate metal borides, and can also react with organic compounds to generate organic boron, which is used in the semiconductor industry, powder metallurgy additives and thermal spraying and other surface coating materials.
Introduction of amorphous boron powder The chemical properties of amorphous monomeric boron are more active than crystalline monomeric boron. Diamond to make cutting tools or drill bits. Add a small amount of boron in the metal smelting process, on the one hand, as a deoxidizer to prevent the metal from oxidizing at high temperatures; on the other hand, to form an alloy to improve the performance of the metal. Boron has the largest volume of heat, second only to beryllium in weight heat. Slightly soluble in nitric acid, insoluble in water. Amorphous boron is chemically active. Powder and air can form explosive mixtures. Amorphous boron is made by reducing boric anhydride with magnesium.Used in solid ram engines and smokeless clean propellant.
Properties of amorphous boron powder Amorphous boron powder is a black or brown amorphous powder, with a melting point of 2150 ℃, and a boiling point of 3680 ℃, chemically active, stable in the air and at room temperature, heated to 300 ℃ is oxidized, reaching 700 ℃ is on fire, trace gasification of boron flame is green. Amorphous boron is chemically active. Powder and air can form explosive mixtures. Amorphous boron is made by reducing boric anhydride with magnesium. Used in solid ram engines and smokeless clean propellant. A variety of coating agents were used to coat the surface of boron powder particles, and the effects of various coating agents on the coated boron powder were studied by transmission electron microscopy and acidity meter, and the composition of combustion residue containing coated boron propellant was analyzed by chemical analysis. The results show that a coating layer is formed on the surface of the boron powder after being coated by the coating agent; the pH value of the system of boron powder with water suspension after coating increases significantly and is suitable for the pharmaceutical process of boron-containing fuel-rich propellant; the combustion efficiency of the boron powder after coating increases significantly.
Application of amorphous boron powder Amorphous boron powder is an important energy material, as a solid fuel in the composite solid propellant, the calorific value of boron is more than double that of carbon, about two times that of aluminium, two times more than magnesium, its volumetric calorific value is almost three times that of hydrocarbon fuel, the density is only slightly lower than that of aluminium, has the highest volumetric calorific value, in terms of its energy, boron should be the best non-metallic fuel. And amorphous boron has a much lower ignition temperature due to its irregular shape and large specific surface area.
Amorphous boron powdersupplier 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 Zinc sulfide, nitride powder, Zinc sulfide powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and amorphous boron powder, you are welcome to contact us or inquire at any time.
