02 May '11, 7pm

Guest Post: Can Innovation Solve the Rare Earth Supply Crunch?

Guest Post: Can Innovation Solve the Rare Earth Supply Crunch?

Much has been written lately regarding the market for rare earth elements . Their use in permanent magnet generators, motors, fuel cells, lasers, and power electronics, as well as other applications, has been well documented. However, as people have looked at the constraints being placed on the global supply of rare earth elements, sensationalism has given way to truth in certain cases. There are ways to innovate our way out of the dilemma. Permanent magnets (PMs) , such as those which are utilized in wind turbine generators, are typically neodymium-iron-boron (NdFeB) magnets. These are the most popular types of magnets because of the magnetic flux density characteristics, and ultimately the generator efficiency, that is achievable. Additionally, other heavy rare earth elements , such as Dysprosium (Dy) and Terbium (Tb), are used in combination with traditional PMs to cont...

Full article: http://www.greentechmedia.com/articles/read/guest-post-ca...

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