Can somebody help me find a powder material with a magnetic shileding affect?

Question

The magnetic permeability needs to be at least 12,000.

Answer 1

I know what ur talking about and i cant think of the name of it !!

Answer 2

The material is called ferrite. It is available here:-

http://www.aaamagnet.net/Magnetic_Powder...

You can get magnetic permeabilities well over 12,000 if you want.

Answer 3

You must be thinking about mu-metal.

The link connects to other high μ materials.

Answer 4

Hi.

I understand what you are after but obviously you havn't mentioned what it is for, which would obviously help as you mention a powder coat... but dry powder or heated plastic powder which could form a protective hard layer?

Any conductive metal powder such as aliminum powder will work as an EMF shield but there are companies out there now who do a plastic with conductive alloys within it which will do the job. I believe this then needs to be heat treated, which forms a plastic coating which is hard.

I found a paper on it that uses alloy.. this is what it reads...

Soft magnetic powder comprising flat soft magnetic particles of an alloy having a composition defined and encompassed by polygon ABCDE in a Fe-Si-Cr ternary composition diagram of FIG. 1 or polygon JKLMN in a Fe-Si-Al ternary composition diagram of FIG. 4 is suitable for use in magnetic shields. The flat soft magnetic particles are prepared by furnishing alloy particles having a predetermined composition, flattening them, and heat treating the flat particles to develop a peak corresponding to plane index (002) in an X-ray diffraction diagram thereof.

From http://www.freepatentsonline.com/5207841...

but I have listed a few companies that might be able to help

http://magnetic-shield.com/?gclid=CNSCwq...

I phones these for you, and they said they don't have a powder coat but might be able to help if you call them with another way..

http://www.priorartdatabase.com/IPCOM/00...

Think these use ferrous bondings..

http://www.hobbyengineering.com/H1293.ht...

These you can buy aluminum powder for less the $10

Anyway, good luck, if I can help more, let me know.