Boron carbide is made by melting boric acid and carbon materials at high temperature in an electric furnace. Silicon boron carbide is one of the hardest man-made materials known. Boron carbide has the characteristics of low density, high strength, and good chemical stability. So what are the uses and physical and chemical properties of boron carbide? The editor of Sicheng Abrasives will answer for you.
The use of boron carbide:
1. The characteristics and properties of boron carbide make boron carbide widely used in machinery. metallurgy. chemical industry. In the fields of aerospace and military industry, abrasives can be made to process gemstones. ceramics. knives. Bearings etc.
2. Boron carbide is mainly used as an additive for refractory materials. Wear-resistant welding rod. And other high-grade anti-oxidation. High temperature resistance. wear-resistant products. Densified boron carbide is used to make sandblasting nozzles. Machinery Seal. Bulletproof materials, because boron carbide has a larger thermal neutron capture cross section. Can absorb a lot of neutrons. It can be used in high-tech fields such as nuclear reactors.
Physical and chemical properties of boron carbide:
1. The molecular formula of boron carbide is B4C, usually diamond-shaped, gray-black fine powder. Does not react with acid and alkali, high/low temperature resistance, high pressure resistance, density ≥ 2.46g/cm3; microhardness ≥ 3500kgf/mm2, flexural strength ≥ 400Mp, melting point 2450°C, boiling point 3500°C.
2. Boron carbide is almost harder than diamond and boron nitride. It is an ideal substitute for diamond and boron nitride. Boron carbide has a flexural strength of 50,000-70,000psi and a compressive strength of 414,000psi. Boron carbide has very low thermal conductivity (29-67W/mK), and its resistivity ranges from 0.1-10ohm-cm. Based on the above excellent physical properties, boron carbide has a wide range of uses.