High Purity Magnesium Single Crystal Production

 

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Technology Overview

Dr. Vesselin Shanov and Dr. Mark Schulz at University of Cincinnati have designed facility and developed a new method to produce high purity Mg single crystals. The method is compatible with growth based on traditional melt techniques. They have grown Mg single crystals with length of 150 mm, diameter of 30 mm and a purity of 99.95%. The method also allows for the Mg single crystal to be grown in a preset shape and size thus reducing or eliminating the need of post-growth processing. Currently, this new approach has been employed for growing of Mg alloy single crystals.

Background

Magnesium (Mg) and magnesium-based alloys have favorable properties as biomedical materials due to their biocompatibility, mechanical properties and resorption in the body. However, Mg by itself suffers from a high corrosion rate, traditionally managed by alloying it with other elements, which may be toxic.

Recently, researchers at the University of Cincinnati have explored the use of Mg single crystal as an alternative to its polycrystalline form. Mg single crystal is typically grown with directional solidification methods where the metal is melted and then cooled extremely slowly, starting from one side of the melt and using a seed crystal. This approach does not allow for customization of the crystal shape and size, thus limiting the use of Mg single crystal for commercial applications.

Advantages and Benefits
  • 99.95% purity Mg single crystal
  • Faster, more efficient process
  • Improved mechanical properties
  • Customization of crystal shape and size
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Patents
Serial No. File Date Patent No. Issued Date
PCT/US2015/045671 8/18/2015    
17/195,997 3/9/2021 11,730,857 8/22/2023
Other Media
Inventor(s)
  • Vesselin Shanov
Contact
Madison Bourbon
Sr. Licensing Associate, Physical Sciences
Lead Inventor