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Synthesis of Superconducting MgB2 Wire, Tapes and Films

Ames Laboratory

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Technology Marketing SummaryAn innovative process for the fabrication of superconducting MgB2 (magnesium diboride) wire suitable for magnets or electrical power transmission. In addition, the same process can be used to create MgB2 tapes or films for use as cavities, filters and electronic devices.DescriptionThe patent-pending process manufactures MgB2 objects simply by exposing similarly shaped boron objects to magnesium vapors at high temperatures. Because of its higher superconducting transition temperature (roughly two times higher than the current industrial superconductor), wires made from magnesium diboride would not have to be cooled to as low of temperatures as niobium-based superconductors, thus reducing cooling costs associated with the quantities of liquid helium required to operate such systems. Measurements have revealed that magnesium diboride has a resistivity (its ability to carry electricity) approximately 20 times better than that of the reigning niobium-based superconductor at its transition temperature. In addition, there is a much larger abundance of magnesium and boron than there is of niobium (i.e. potentially cheaper raw materials) and the density of MgB2 is very low (i.e. it weighs much less).Benefits* Versatile (very high directivity and tunability have utility for a variety of communications applications)
* Efficient (operates at lower power and is compact in size)
Applications and IndustriesThis process will be used to make superconducting wire, tapes and films, for magnets, electric power transmission lines, microelectronic interconnects, and microelectronic circuit elements, such as cavities and filters.Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
2787DevelopmentAvailable12/07/201012/15/2010

Contact AMES About This Technology

To: Stacy Joiner<joiner@ameslab.gov>