Scandium – an overview

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Scandium – an overview

Where it found and what is is it used for? Scandium occurs at roughly 10 parts per million in the earth´s crust, mostly in silicates. Historically, however, for a number of reasons it has been very difficult to extract and process economically. Like many of the REEs, scandium has some extraordinary properties. Alloyed with aluminium, it produces one of the lightest, strongest alloys in the world one with significantly improved durability, plasticity, and weldability and corrosion resistance. Aerospace could be the biggest demand driver because anything that adds strength while saving weight is invaluable. Airbus estimates that aircraft made from welded aluminium scandium zirconium (AlScZr) alloy would be 15% lighter and 15% cheaper to build compared to present materials. Another promising use for scandium is when Scandium Stabilized Zirconium is used in place of Yttrium Stabilized Zirconium in Solid Oxide Fuel Cells. It lowers operating temperatures, improves performance and extends the operational life of the fuel cell. This is due to scandium`s high ionic conductivity. A third use for scandium that is set to grow is in lighting. Scandium being combusted on the sun is what gives us daylight. Today, lighting on film sets and in some stadium lighting applications employs scandium to mimic this natural light. Next generation, environmentally friendly light bulbs are increasingly using scandium for this reason. It is also used in high-end sporting goods such as bicycle frames, baseball bats and golf clubs. However, it is important to keep in mind that today`s advanced computer analytics and modelling software allow metallurgists to test combinations of specialty metals more rapidly than ever before, which is leading to the design of ever more efficient products at ever lower prices. In short, these laboratories are finding more uses for scandium every year. Exactly how much Scandium is produced and what is the going rate? Scandium is usually marketed in the form of scandium oxide (Sc2O3), but the market is decidedly opaque and we certainly prefer the pure metal. Our current price is about ₏70,000/ kg depending on quantity required. Unlike other rare earths the more you buy the more expensive it gets. However, the miniscule amounts of scandium consumed per application would render it utterly price inelastic because the competitive advantage gained from its use at minimal additional cost far outweighs any other considerations if only sufficient quantities could be reliably delivered to the market to enable its widespread use. Today`s erratic supply, which varies between 2-10 tons per annum (tpa), simply isn`t enough to warrant revamping production lines for its use. For example, word on the street is that Bloom Energy, a California company that developed the Bloom Box, a 20,000 lb., solid-oxide


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