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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.
This is a small size ring rare earth magnet, N38M grade, the outer diameter of the ring is 11mm, the hole is 2mm, which is also relatively small, the thickness is 5mm, the surface is plated with bright nickel, this type of magnet is suitable for passing through some thin shafts....
This is a very hot neodymium round magnet size, diameter 10mm, thickness 2mm, in many areas can be applied, the only difference is that different customers choose the coating, performance level and temperature resistance performance on the difference, the magnet weighs about 1.2g....
This product is a bowl-shaped magnet, because its shape is like the rice we eat. It is processed into a concave shape on the basis of a circular magnet, which belongs to the special-shaped magnet category. Our company is good at processing various complex special-shaped neodymium magnets. Welcome to all over the world. Customer service....
This is a ring magnet with an outside diameter of about 2 inches, belongs to medium size, made of rare earth neodymium material, the hole in the center is 40mm, thickness 5mm, the customer chooses N38 grade,...
Product is a Y30 (C8) grade round ferrite magnet, the N pole has a pit, the surface magnetic field strength is about 1300 Gauss, the specific size is 18mm in diameter, 8mm in thickness, magnetized in the thickness direction, and the tolerance is ±0.1mm....
You are now browsing this is a 4 inch ceramic ferrite ring magnet, by the courage magnet manufacturers physical samples photographed, magnetic ring outer diameter 110mm, hole 50mm, thickness 6mm....
You are now browsing this magnet is the diameter of 80mm series of round rare earth magnets, the thickness of 10mm, nickel-plated surface, the thickness of the magnetization....
We can provide various sizes of thin rectangular neodymium magnets, ultra-thin round magnets, ultra-thin square magnets, with high dimensional accuracy, stable performance is not easy to demagnetize, welcome to contact us for a quote....