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Did you know that magnets can conduct electricity? Is it possible that all magnets can conduct electricity, or only some magnets can conduct electricity? Today, Courage Magnet Xiaofu will introduce to you the things about magnets conducting electricity.
Magnets, although the name contains the word iron, but in fact magnets are not iron, they are not made of iron. Many people misunderstand this. The material composition contained in each magnet of different materials is also different, and their conductivity is also different
Our commonly used permanent magnets include rare earth neodymium magnets, ceramic ferrite magnets, samarium cobalt magnets, alnico magnets, iron chromium cobalt magnets, etc. Among these magnets, sintered ferrite magnets (hard magnets) are non-conductive, and the rest All magnets can conduct electricity.
Which magnet conducts electricity better?
Iron-nickel-cobalt magnets are more conductive, and NdFeB magnets will have better conductivity if they are electroplated with nickel-copper-nickel.
The conductivity of NdFeB magnets is related to magnet composition, sintering density and temperature. At room temperature of 20 degrees, the resistivity of NdFeB magnets is dozens of times higher than that of electromagnetic wires, that is, the conductivity is dozens of times worse. See the table below for details:
Resistivity (20 degrees) micro-ohm μΩ·cm cm
NdFeB magnet 140~160
Copper wire 1.724~1.796
Aluminum wire 2.8~2.8264
Conclusion;
Except for hard ferrite magnet, which cannot conduct electricity, the rest of permanent magnets, such as neodymium magnets, samarium cobalt magnets, alnico magnets, iron chrome cobalt magnets, etc., can conduct electricity. Magnets can conduct electricity, which is not the same principle as ordinary iron. Self-inductive current is also generated.
The above articles are organized and provided by permanent magnet suppliers courage. If you need to buy or consult some questions about magnets, you can send us an online inquiry or email.
You are now seeing the specifications of this magnet ring OD 13mm, bore diameter 8mm, thickness of 3.5mm, the surface of the black epoxy, due to the reason of the photo may look like a ferrite, the actual bonded ring magnets, suitable for a variety of types of motor, sensor, and electric appliances....
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N42SH grade radial hollow cylindrical magnet 6.3x3x11mm for high speed motors...
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