Ferrite magnets are a type of permanent magnet that are widely used in various applications, including motors, speakers, and magnetic separators.
Ferrite magnets, also known as ceramic magnets, are a type of permanent magnet made from a mixture of iron oxide and barium or strontium carbonate. They are known for their high resistance to demagnetization and their low cost compared to other permanent magnets. In this article, we'll explore the different types of ferrite magnets, their properties, and their applications.
Strontium Ferrite Magnets:
Strontium ferrite magnets are the most commonly used type of ferrite magnet. They have a high coercivity (resistance to demagnetization) and a high resistance to corrosion. They are used in a wide range of applications, including speakers, motors, and generators.
Barium Ferrite Magnets:
Barium ferrite magnets have a higher energy product than strontium ferrite magnets, which means they can produce a stronger magnetic field. They are used in applications where a high magnetic field strength is required, such as in MRI machines and in particle accelerators.
Injection Molded Ferrite Magnets:
Injection molded ferrite magnets are made by injecting a ferrite powder mixed with a binder into a mold. They can be made into complex shapes and have a higher magnetic strength than traditional ferrite magnets. They are used in applications such as motors, sensors, and magnetic couplings.
Flexible Ferrite Magnets:
Flexible ferrite magnets are made by mixing ferrite powder with a binder and then rolling or extruding the mixture into thin sheets. They are flexible and can be easily cut into different shapes. They are used in applications such as refrigerator magnets, signage, and magnetic seals.
Bonded Ferrite Magnets:
Bonded ferrite magnets are made by mixing ferrite powder with a binder and then pressing the mixture into a mold. They have a high resistance to corrosion and are used in applications such as electric motors, sensors, and magnetic couplings.
Sintered ferrite magnets can be classified into two categories based on the magnetic properties: isotropic and anisotropic. Isotropic sintered ferrite magnets have the same magnetic properties in all directions, while anisotropic sintered ferrite magnets have a preferred direction of magnetization, making them stronger in one direction than in others.
Zhongke mainly manufacture Sintered ferrite magnets which are commonly used in applications such as motors, generators, and loudspeakers due to their high magnetic strength, good corrosion resistance, and low cost. They are also widely used in automotive applications, such as ABS brake systems and power steering systems.