Is Exposure to Boron Carbide Harmful to the Human Body?
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Update time : 2022-01-13 16:52:27
Boron Carbide is an important special ceramic with many excellent properties, commonly known as synthetic diamond, which is a kind of boride with high hardness. It does not react with acid and alkali solutions, it is easy to manufacture and the price is relatively cheap. It is widely used in grinding, grinding and drilling of hard materials. Boron Carbide was first discovered in 1858. Its hardness is second only to diamond and cubic boron nitride in nature, especially its near-constant high temperature hardness (>30GPa) is unmatched by other materials, so it has become a super An important member of the hard material family.
Boron Carbide B4C Powderhas the characteristics of high melting point (2450℃), high hardness, high modulus, low density (2.52g/cm3), good abrasion resistance, strong acid and alkali resistance, and has good neutron absorption capacity , low expansion coefficient, thermoelectric properties, it is widely used in refractory materials, engineering ceramics, nuclear industry, aerospace and other fields.
However, due to the shortcomings of Boron Carbide itself, such as low fracture toughness, high sintering temperature, poor oxidation resistance, and poor stability to metals, its further application in industry is limited. Awaiting further development and research.
Boron Carbideis irritating, so long-term close contact requires certain protective measures. For example, avoid inhalation of its dust and direct skin contact. If the patient only inhales a small amount of powder during the exposure to Boron Carbide powder, it will not directly cause the body to suffer from silicosis. Generally, as long as you stay away from the substance at this time, you can still reduce the chance of suffering from silicosis. However, if you continue to inhale the powder, it may gradually lead to the emergence of these toxic irritating substances in the lungs, and the lungs will begin to develop silicosis.
The hardness of Boron Carbideis lower than that of industrial diamond, but higher than that of silicon carbide. Less brittle than most pottery. Has a large thermal energy neutron capture cross section. Strong chemical resistance. Not attacked by hot hydrogen fluoride and nitric acid. Soluble in molten alkali, insoluble in water and acid. Relative density (d204) 2.508～2.512. Melting point 2350 ℃. Boiling point 3500 ℃. Boron Carbide can absorb a large number of neutrons without forming any radioisotopes, so it is an ideal neutron absorber in nuclear power plants, and neutron absorbers mainly control the rate of nuclear fission. Boron Carbide is mainly made into controllable rods in nuclear reactors, but it is sometimes made into powder to increase the surface area. When the Chernobyl nuclear accident occurred in 1986, a front-line aviation regiment in Tozuk, Russia was all transferred to the east of Chernobyl, and helicopters from Mi-8 to Mi-26 were immediately put into the airlift mission. . Boron Carbide starts dropping regular sand again after it runs out. Flying has also become much easier as the drop progresses. After the helicopter dropped nearly 2,000 tons of Boron Carbide and sand, engineers finally announced that the chain reaction inside the reactor had ceased, and the helicopter eventually carried a total of 5,000 tons. Since Boron Carbide is a harder solid than silicon carbide or tungsten carbide, it has long been used as a grit abrasive. Due to its high melting point, it is not easy to be cast into artificial products, but it can be processed into simple shapes by melting powder at high temperature. It is used for grinding, grinding, drilling and polishing of hard materials such as cemented carbide and precious stones. 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 penetration of armor-piercing projectiles into hot-pressed coatings into an integral layer. In the arms industry, it can be used to manufacture gun nozzles. Boron Carbide is also used in the manufacture of metal borides and in the smelting of sodium boron, boron alloys and special welding.
Luoyang Trunnano Tech Co., Ltd (TRUNNANO) is a professional Boron Carbide B4C Powdersupplier with over 12 years experience in chemical products research and development. We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
