Ferrite Magnets (Ceramic)
Ferrite Magnets are the best value permanent magnet available due to an abundance of raw materials and economical cost to manufacture. Also called Ceramic Magnets, they are ideal for creating a deep magnetic field inexpensively and have good resistance to corrosion, despite being rather brittle. They are preferred by many manufacturers due to their low cost compared to other permanent magnets such as Rare Earth Neodymium, Samarium Cobalt and Alnico. Ferrite magnets are durable, cost effective and suitable for many uses across a broad range of industries and applications.
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Widely available since the 1950's, these high-quality permanent magnets are offered in several shapes, sizes and strengths. Ferrites can be used in temperatures up to 250 degrees Celsius. They are commonly used in magnetic separators, motors, water conditioning assemblies, music speakers, handicrafts, science experiments and for many other purposes.
Ferrite Ceramic Magnets properties:
Ferrite magnets are made from a composite of iron oxide and barium carbonate (BaC03) or strontium carbonate (SrC03) which is sintered by compacting the fine alloy powder in a die and then fusing it with heat into solid material. Due to their high coercive force they are classified as hard materials, as are other permanent magnets including Neodymium, Samarium Cobalt and Alnico.
The raw materials used to produce Ferrite magnets are readily available at relatively low cost, so they are the most common permanent magnets in use today.
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Ferrite disc magnets, also called ceramic disc magnets, come in a variety of sizes, as a low cost magnetic material they are to be found across a broad range of magnetic therapeutic uses, on the back of three dimensional fridge magnets and in school science projects.
Large Ferrite block magnets are often used in sweeping and separation applications. Smaller Ferrite blocks are commonly used in DC motors, as sensors, and in various handcrafts.
Ferrite pot magnets have a mild steel casing over a Ferrite ring magnet. They have a round central hole and can be fixed to non-magnetic surfaces using a bolt, rivet or screw.
Ferrite cylinder magnets, also called ceramic magnets, are widely used in speakers for home and car audio systems as they suppress high frequency noise in electronic circuits.
Ferrite ring magnets, also known as ceramic ring ferrites, are often used in loudspeakers and in resonance imaging and torque drives. Some applications for this permanent magnet are: holding, door closures, joinery, and light fixtures.