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Magnet Info

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bob urz

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May 6, 2013, 11:51:59 AM5/6/13
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http://www.electronicproducts.com/Passive_Components/Magnetics_Inductors_Transformers/What_Makes_Rare-Earth_Magnets_So_Special_amp_How_are_they_made.aspx

bob

Rupert

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May 6, 2013, 12:08:29 PM5/6/13
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On Monday, May 6, 2013 8:51:59 AM UTC-7, bob urz wrote:
> http://www.electronicproducts.com/Passive_Components/Magnetics_Inductors_Transformers/What_Makes_Rare-Earth_Magnets_So_Special_amp_How_are_they_made.aspx
>
>
> bob

Very cool. I didn't know this info before. Makes me wonder why there has been a shortage since they're manufactured from scratch rather than "dug up". Probably an artificial shortage.

Les Cargill

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May 6, 2013, 1:29:48 PM5/6/13
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No, the actual rare earth metals are dug up. the magnets are alloys.
The term "rare earth" is a little misleading, and I think of it
as something like a proper name.

> Probably an artificial shortage.
>

1) Tim Worstall may actually know. He's in that business and
has a blog.

http://www.forbes.com/sites/timworstall/2012/10/27/something-strange-in-chinese-rare-earths-production/

2) This : http://www.pbs.org/wgbh/nova/physics/hunting-elements.html
kinda goes into that subject briefly. Rare earth metals aren't all that
rare, they're just poorly distributed. Production is a lot
about the energy costs to extract them.

--
Les Cargill

Flint

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May 8, 2013, 8:35:20 AM5/8/13
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My understanding is that China has the lion's share of actual rare
earth materials in the world. Is this correct?

--
MFB
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