Electronics > Electronics

materials for stronger motors

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jwatte:
What makes you think that Metglass is better than any other brand of ferrite?

vipulan12:
it has a high permeability, so you could make stronger motors that use less current
but there might be something wrong with using this material since i have never seen a motor using metglass

jwatte:
Metglass is a company that makes ferrites. It is not a particular kind of material. There are many companies that makes ferrites. Metglas ferrites of a particular kind (say, cobalt-based) are likely no better or worse than the same kind of ferrite made by another company.

Who made the glass in your car windows? Who made the ceramics in your breakfast bowl? Who made the plastic in the handles of your kitchen knives? Who made the ferrite in the cores of your motors?

Just like there are tons of companies making aluminum, steel, plastics, and other standard materials, the makers of objects generally don't disclose who supplies their materials. I wouldn't be able to look at a motor or inductor, and tell who made the ferrite in the core. Might be using Metglass ferrite, might be using TDK ferrite, might be using Micrometals ferrite, or one of a zillion other manufacturers.

jwatte:
Just to be clear: Here's a list of some companies that make ferrite of various composition:

http://people.zeelandnet.nl/wgeeraert/ferriet.htm

Ferrites made by Metglas are not "special" in any particular kind of way (nor are the ferrites made by any of the others.) They each have strengths/weaknesses, and the same set of strengths/weaknesses can be found in ferrites from many other manufacturers.

itsjustgame578:
Permalloy is great for a high saturation and extremely high relative permeability. Also, transformer steel is great for these applications. +1 for metglass.... expensive but great for the purpose you are describing.

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