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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 1mmx1mm miniature circular magnet has a compact size and a surface magnetic field of approximately 2900 Gauss, making it suitable for precision applications with high requirements for magnet size....
This product is a miniature round magnet, made of rare earth NdFeB magnets, belonging to the ultra-small size magnet series, using N35 grade, the specific size is 1.5mm diameter, 1mm thickness, axial magnetization, surface nickel coating, tolerance ±0.05, such as If you are interested in this small magnet product, you can contact us to customize it for you....
Customers from the United States, the United Kingdom, Australia, Japan, Poland and other customers are looking for ferrite cylindrical magnets. Welcome to contact the Courage magnet manufacturer. Our company is located in Dongguan, China. There are many ready-made sizes and low prices. Like the main picture...
The sample is a small-sized Y35 ferrite magnetic block with a specification of 3 × 1.3 × 4mm, magnetized along the length direction, and a surface magnetic field of about 1300 Gauss....
This is a very small rectangular ferrite block magnet, measuring 2.45 mm in length and 1 mm in both width and height. It is magnetised along its length and is barely noticeable when held in the hand....
7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
This is a radial 4-pole ring (Hollow cylinder) magnet, the material is bonded NdFeB, with high magnetic performance, the size is 16mm outer diameter, inner hole 5mm, height 20mm, surface gray epoxy treatment, suitable for water pump motor...