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Author Topic: Magnetic Shielding  (Read 27197 times)

Offline Low-Q

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Re: Magnetic Shielding
« Reply #30 on: November 04, 2014, 11:04:12 PM »
Has anyone played with shielding materials such as MetGlas?

http://www.blockemf.com/catalog/product_info.php?cPath=757&products_id=5114

Looking here http://www.lessemf.com/faq-shie.html#Lead-Copper they quote the following:

Here's how the permeabilities of some common materials compare:

Air ........... 1
Copper ...... 1
Aluminum ... 1
Tin ............. 1
Lead .......... 1

Nickel .................. 100
Commercial Iron ... 200
Stainless Steel ....... 200
MagnetShield ........ 4000

Magnetic Shielding Alloys* ....... 20,000+
Annealed MetGlas ................. 1,000,000

Regards

Sean.
Shielding is a confused term when it comes to magnets. Magnetic materials GUDES the magnetic field somewhere else than where the field lines would go in thin air. Not shielding them.
This guide will have an impact on the magnet - as these materials are attracted to the magnet, and vica verca. Using these magnetic materials will definitely not help you pass the sticky spot. And if you for some reason don't have a sticky spot anymore, the system will not longer work because there are no magnetic fields left to "power" anything.


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