#neodymium
Despite their ubiquity in consumer electronics, rare-earth metals are, as their name suggests, hard to come by. Mining and purifying them is an expensive, labor-intensive and ecologically devastating process. Starting with the two elements as a mixed powder, a metal-binding molecule known as a…
Designing a dysprosium-free high-performance neodymium magnet
Fujitsu Limited today announced that, in joint research with the National Institute for Materials Science (NIMS) and Fujitsu Laboratories Ltd., it has developed the world’s largest magnetic-reversal simulator, using a mesh covering more than 300 million micro-regions.
Based on the large-scale magnetic-reversal simulation technology first developed in 2013, this new development offers a faster calculation algorithm and more efficient massive parallel processing. The simulations are run on the K computer. In addition, by utilizing this technology, Fujitsu conducted large-scale simulations to clarify the correlation between the fine structure of neodymium magnets, a type of permanent magnet, and magnetic strength, by examining the process of magnetic reversal in neodymium magnets. The results successfully demonstrated a way to develop high-strength neodymium magnets with more than twice the coercivity of previous magnets, without dysprosium. In conventional neodymium magnets, dysprosium alloying is indispensable for enhancing magnetic coercivity. These simulation techniques offer a clear design rule for high-performance neodymium magnets that do not rely on dysprosium. Fujitsu and NIMS will be making a joint presentation on these results at the 13th Joint MMM-Intermag Conference, running January 11-15, 2016, in San Diego, California.
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Well I’m sitting in hospital unexpectedly - nothing too serious. I was going to post this last night but I was in too much pain.
So this is a proof of concept. The word “magical” is used far too much but that was my ambition. Something of unknown use and unknown provenance.
Proof of concept is the build I make all the mistakes on - motor too fast, planets too large and high, LEDs wiring wrong and ugly battery packs. Internally this might not be saleable quality.
The video isn’t great, sorry. When I get home I will take some still photos of all the decorations and detail. It was inspired by those magnetic ballerina jewellery boxes from the 1960s. She would dance around a mirror when the box was opened.
I initially covered the neodymium magnets and attached the planet on a post. Wrong. They fell down, stuck to each other with such force they ended up broken. So I’ve gone for simple using the magnetic force to hold the metal spheres. I will include several spare magnets and planets.
I hope you like it!
Steampunk
“Cosmo” electric guitar by Verso Musical Instruments,
With an ethos that combines his experience building Weissenborn instruments, and the influence of German industrial design icon Dieter Rams, Robin Stummvoll’s Verso guitars are a very different proposition with Cosmo, an utterly simplified, minimalist design, handcrafted with a body made of bent steel.
The Magnet Mount Pickups use neodymium magnets and were especially designed and manufactured for Cosmo. They stick to the metal body and can be moved around, allowing you to experiment with sound.
The laser cutting and powder coating of the sheet metal is done by local craftsmen; the wood used is grown in Germany.
Courtesy: Verso Instruments
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