High Purity Magnesium Diboride MgB2 Powder CAS 12007-25-9, 99%

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About Magnesium Diboride MgB2 Powder:
Magnesium diboride is an inorganic compound with the molecular formula MgB2. It is a dark gray, insoluble solid. It is an ionic compound with a hexagonal crystal structure. It is an intercalated compound with alternating layers of magnesium and boron. This compound is of interest because it is superconducting at 39 K(−234°C).In terms of composition, MgB2 is markedly different from most transition-metal-based cryogenic superconductors.
Magnesium diboride has been known to scientists for nearly 50 years, but no one has ever studied the material's superconductivity -- whether it can conduct electricity perfectly without resistance when cooled to temperatures close to absolute zero. All that changed in January 2001, when Jun Akimitsu of Aoyama Gakuin University in Tokyo announced that he and his team had found that magnesium diboride became superconducting at 39 degrees Kelvin (-389 degrees Fahrenheit), almost twice the temperature of current intermetallic conductors. The announcement sent experimenters around the world scrambling to replicate and confirm the Japanese findings.
Magnesium diboride is converted into a superconductor at a temperature slightly close to the absolute temperature of 40K (-233 ° C). Its transition temperature is nearly twice as high as that of other superconductors of the same type, and its actual operating temperature is between 20 and 30K. This temperature can be achieved by liquid neon, liquid hydrogen, or a closed cycle freezer. These methods are simpler and cheaper than the industry's use of liquid helium to cool niobium alloys (4K). Once doped with carbon or other impurities, magnesium boride is as good at maintaining superconductivity in the presence of a magnetic field or a current as niobium, or better. Feel free to send an inquiry to get the latest price if you would like to buy Magnesium Diboride MgB2 Powder in bulk.

Specifications of Magnesium Diboride MgB2 powder

Magnesium Diboride powder Purity:98.5% or Customized
Magnesium Diboride powder Size:5-15um or Customized
Magnesium Diboride powder Colour:Black
Magnesium Diboride powder CAS No.:12007-25-9
Magnesium Diboride powder EINECS No.:234-501-2

Magnesium diboride is an ionic compound, with the hexagonal crystal structure. Magnesium diboride at absolute temperature slightly 40K (equivalent to -233 ℃) will be transformed into a superconductor. And its actual operating temperature is 20 ~ 30K. To reach this temperature, we can use liquid neon, liquid hydrogen or closed-cycle refrigerator to finish cooling. Compared to current industry using liquid helium to cool the niobium alloy (4K), these methods are more simple and economical. Once it is doped with carbon or other impurities, magnesium diboride in a magnetic field, or there is a current passing, the ability to maintain the superconducting is as much as niobium alloys, or even better. 
 

How is Magnesium Diboride MgB2 Powder produced?
The preparation method of MgB2 is mainly the reaction synthesis of magnesium powder and boron powder mixed.
MgB2 was obtained by mixing 99.9% magnesium powder with 99% amorphous boron powder at the ratio of 1:2, pressing it into small balls and adding heat in high-pressure nitrogen.
At present, the commonly used method is to mix amorphous elemental boron powder and magnesium powder according to the stoichiometric ratio (or add excessive magnesium), and then put them into a sealed refractory metal container (such as tantalum), and then put them in a quartz tube for vacuum pumping, and then sintered at 700~950℃ for 1~4 h to synthesize MgB2.

Applications of Magnesium Diboride MgB2 Powder:
Potential applications for Magnesium diboride include superconducting magnets, power transmission lines and sensitive magnetic field detectors.
Magnesium diboride is the attention of new materials, the research mainly focused on the synthesis and superconducting element performance for the industrial synthesis and sintering properties, electrical conductivity at room temperature, the liquid aluminum erosion resistance of fluoride such as corrosive resistance study is less, so far no will MgB2 and its composite materials used in aluminum electrolysis cathodic area coverage.
MgB2 is easier to be sintered and densified than TiB2, and its electrical conductivity basically meets the requirements of aluminum electrolysis cathode. Therefore, MgB2 and its composite materials are likely to be widely used as cathode materials for aluminum electrolysis.
Propellants, Explosives, pyrotechnics: Unlike the element boron, which burns incompletely through glass oxide layers that block oxygen diffusion, magnesium diboride burns completely in oxygen or oxidizer mixtures. Therefore, magnesium boride has been proposed as fuel for ramjet jets. In addition, the use of MgB2 in enhanced explosives and propellants has been proposed for the same reason.
 

Storage Conditions of Magnesium Diboride MgB2 powder

This product should be sealed and stored in a cool, drying chamber and should avoid exposure to the air in order to prevent moisture reunion which will affect the dispersion properties and result use. Stress should be avoided.

Packing & Shipping of Magnesium Diboride MgB2 powder:
We have many different kinds of packing which depend on the magnesium diboride MgB2 powder quantity.
Magnesium diboride MgB2 powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Magnesium diboride MgB2 powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.

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Product name are used in various high-tech fields, so the market demand for Magnesium Diboride will continue to rise. We are a quality supplier of Magnesium Diboride, please feel free to contact us.

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