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What is the Curie temperature of a permanent ferrite magnet? What is the demagnetization temperature? Before answering this question, let's take a look at an introduction to the Curie temperature.
What is the Curie temperature?
Curie temperature refers to the temperature at which a material can change between a ferromagnet and a paramagnet. Below the Curie temperature, the substance becomes a ferromagnet, and the magnetic field associated with the material is difficult to change. When the temperature is higher than the Curie temperature, The substance becomes a paramagnet, and the magnetic field of the magnet is easily changed with the change of the surrounding magnetic field.
The picture is a multi-pole magnetized ring ferrite
What is the Curie temperature of a permanent magnet ferrite?
It is reported that the Curie temperature of ferrite is around 450°C, usually greater than or equal to 450°C, and the hardness is around 480-580.
How to demagnetize ferrite magnet?
If the ferrite is demagnetized, it is more troublesome, because the required temperature is very high, and if it needs to be demagnetized, it needs to be heated to 900 ℃ and reheated. Just above the Curie point is not clean. If you want to retreat, you can use the method of AC attenuation to demagnetize.
Curie temperature introduction of other magnets;
Maximum working temperature and Curie temperature of neodymium magnet
Samples consist of high performance zinc plated hollow cylindrical sintered neodymium magnets and rotor shafts by radial magnetization, can be used for high speed hair dryer, vacuum cleaner, aeromodelling motors, etc,...
This is a disc-shaped ferrite magnet, anisotropic Y30 grade, diameter is 16mm, thickness is 5mm, 16x5mm, the surface is uncoated, natural color, suitable for industry, toys, crafts, if you are satisfied with this size, you can contact Our company will quote for you....
The round countersunk magnet is mainly used with screws. You can choose the size of the magnet, the size of the screw hole, the depth and the level of magnetic properties according to your actual needs. If you need our company to evaluate the price, please send us an inquiry for processing samples....
This is a small samarium cobalt magnet, made of rare earth samarium cobalt magnetic material, the size is 2mm in diameter and 2mm in thickness, the material is Sm2Co17, the grade is 26, and it is axially magnetized, so the N pole and S pole are on the plane, The surface is uncoated and is mainly used in high temperature industrial environments....
This is a ferrite square magnet, also known as a ceramic rectangular magnet. It is a widely used and cheap magnet material. The size of this sample is 15mm in length, 8mm in width, 3mm in thickness, and magnetized in thickness. The surface magnetism is 1030 Gauss about....
This is a circular ferrite magnet with a diameter of 5mm and a thickness (height) of 5mm, provided by the Chinese magnet supplier courage, with axial magnetization and no coating. This size is a relatively small ferrite magnet that can be seen. One that can withstand temperatures as high as 250°C and as low as -40°C, if you are interested in it, contact us for a quote....
This product is a ring magnet with an outer diameter of 8mm, an inner diameter of 2mm and a thickness of 3mm. It belongs to the series of 8mm ring magnets. The surface is nickel-plated, and it is axially magnetized....
Our factory specializes in producing all kinds of ferrite magnetic products, all kinds of square, round cake, magnet and ring. There are many mold specifications. If there is no mold, you can open the mold for processing! Welcome to inquire about the price!...