Name; boron carbide
English Name: boron carbide Alias: Tetraboron Carbide Molecular Formula: B4C Product Usage: Used for grinding, grinding, drilling and polishing hard materials such as cemented carbide and precious stones, manufacturing metal borides, smelting sodium boron and boron alloys and special welding. Physical and chemical properties: gray-black powder. The relative density is 2.52. The melting point is 2350℃. Boiling point > 3500℃. Does not react with acid-base solution, and has high chemical potential, neutron absorption, wear resistance and semiconductor conductivity. It is one of the most stable substances to acid, and it is stable in all concentrated or dilute acid or alkaline water solutions. After being treated with mixed acid of sulfuric acid and hydrofluoric acid, it can be completely decomposed into carbon trioxide and boron trioxide after being calcined in air at 800℃ for 265438±0h hours. When some transition metals and their carbides exist, they have special stability. Transition metals of the fourth, fifth and sixth groups in the periodic table of elements react strongly with boron carbide powder at1000 ~1100℃ to form metal borides. Packaging and storage: packed in polyethylene plastic boxes and stored in a clean and dry warehouse. When boron carbide is melted with sodium hydroxide, potassium hydroxide, sodium carbonate and potassium carbonate in the presence of nitric acid, it is easy to decompose and make a solution. Boron carbide, commonly known as synthetic diamond, is a kind of high hardness boride. Because boron carbide is a harder solid than silicon carbide or tungsten carbide, it has long been used as a coarse sand grinding material. Because of its high melting point, it is not easy to cast artificial products, but it can be processed into simple shapes by melting powder at high temperature.
The main purpose of editing this paragraph
It can be used to make gun nozzles in the arms industry. Boron carbide is easier to manufacture and cheaper than elemental boron, and its greatest use is in military industry. Boron carbide can also be used as a ceramic coating for warships and helicopters, which is light in weight and has the ability to resist the penetration of armor-piercing projectiles through the whole protective layer. It can also be used for grinding, grinding, drilling and polishing hard materials such as cemented carbide gems, manufacturing metal borides, smelting boron steel, boron alloys and special welding.
Edit the properties of the boron carbide nozzle in this section.
It has the same performance as boron carbide, is extremely hard and wear-resistant, does not react with acid and alkali, resists high/low temperature and high pressure, and has a density of ≥ 2.46 g/cm3; Microhardness ≥3500kgf/mm2, bending strength ≥400Mpa, melting point ≥ 2450℃. Because the boron carbide nozzle has the above characteristics of wear resistance and high hardness, the boron carbide sandblasting nozzle will gradually replace the known sandblasting nozzles made of cemented carbide/tungsten steel and silicon carbide, silicon nitride, alumina, zirconia and other materials.