Magnesium diboride (MgB2) is a superconducting material with great development and utilization value

Magnesium diboride, with the chemical formula MgB2, can be produced by the reaction of boron trioxide and magnesium. Magnesium diboride has alternating magnesium layers and boron layers. It is an intermetallic compound and an ionic compound. Its crystal structure is hexagonal and its appearance is black solid. It is slightly soluble in acid. Magnesium diboride was synthesized earlier and has superconducting properties under certain temperature conditions, but its superconducting properties were not discovered until the 21st century.

At present, a large number of superconducting materials have been discovered around the world, with thousands of types, but there are few products with practical value, mainly niobium-based low-temperature superconducting materials, bismuth-based and yttrium-based copper-based high-temperature superconductors Materials, iron-based high-temperature superconducting materials and other categories. In 2001, scientists from Aoyama Gakuin University in Japan discovered the superconducting properties of the intermetallic compound magnesium diboride, with a critical temperature (Tc) of 39K (-234°C).

According to the “China Magnesium Diboride (MgB2) Industry Market In-depth Research and Development Prospects Forecast Report 2022-2027” released by the Industrial Research Center shows that from a performance perspective, magnesium diboride has the advantage of a high critical current density. There is no weak connection phenomenon and it will not destroy the transmission of superconducting current. Its properties are particularly stable. If it is doped with a small amount of impurities, it will Under high magnetic field or current conditions, the superconducting properties can reach or even exceed the level of niobium-based low-temperature superconducting materials, and their critical temperature can be further increased. Magnesium diboride can therefore be used to make high-performance superconducting materials.

From a cost perspective, magnesium diboride is a superconducting material with a higher critical temperature that has been discovered so far. Liquid neon and liquid hydrogen can be used as cooling media without the need for liquid helium. Liquid helium resources are scarce and expensive. In comparison, the prices of liquid neon and liquid hydrogen are low, especially liquid hydrogen resources are abundant, so the use cost of magnesium diboride is low; magnesium diboride has simple composition, wide source of raw materials, easy preparation and processing, and its production cost It is also low, which is an advantage unmatched by other superconducting materials.

Generally speaking, magnesium diboride is a low-cost, high-performance superconducting material. It is a type of high-temperature superconducting material. It has great development and utilization value and can be widely used in superconducting magnets, superconducting cables, and magnetic fields. Detector and other manufacturing aspects. At present, there is a wide demand for superconducting materials in the fields of communications, electric power, electronics, energy storage, medical care, transportation, instrumentation, national defense, nuclear industry, scientific research and other fields. Magnesium diboride has broad application prospects in the future due to its excellent properties.

Industry analysts said that globally, the main manufacturers of magnesium diboride include Materion Corporation of the United States, Stanford Advanced Materials of the United States, Foreign companies such as ESPI Metals of the United States, Hitachi of Japan, and Sam Dong of South Korea, as well as domestic companies such as Baoding Borda New Material Technology Co., Ltd., Luoyang Tongrun Information Technology Co., Ltd., and Shanghai Longjin Metal Materials Co., Ltd. Magnesium diboride is one of the products with high practical value among the superconducting materials discovered so far, and the market space is expected to continue to increase in the future.