The different types of magnets which have industrial uses

Bonded Neodymium magnets are made of the strong Nd-Fe-B material blended into an epoxy binder. The mix contains nearly 97% magnet material and 3% epoxy. The manufacturing process includes the process of combining Nd-Fe-B powder with an epoxy binder and squeezing the mixture. Hence, the material is assembled by compression bonding, the dimensions usually differ slightly.

Features

·         Bonded neodymium-iron-boron (NdFeB) magnets are powerful magnets that are generally used for different applications.

·         Epoxy coating is one of the most commonly used for bonded NdFeB magnets,

·         Electroless nickel plating is generally used to avert disintegration.

·         Isotropic bonded magnetic core material like NdFeB material can be easily magnetized in any direction, or with many poles.

·         Bonded Nd-Fe-B material is usually isotropic, so it can be easily magnetized through any direction, including multi-polar arrangements. Since the material is in an epoxy binder, it can be easily manufactured or machined on a mill or lathe. Nonetheless, the material will not support a thread, so holes cannot be tapped.

·         Bonded Nd-Fe-B material is generally used to considerably decrease the size of designs that generally used ceramic magnet materials. Vital size reductions can be achieved since the material is nearly three times tougher than ceramic magnet material.

·         Additionally, as the material is isotropic, it can be easily magnetized multi-polar, like the N-S-N-S (North-South- North-South) pattern on the outer diameter of a ring.

Magnetic bead separation is a fast, effective, clean process that is generally used to restore filtration, centrifugation, and separation techniques. Magnetic beads and pieces are usually functionalized with antigens, antibodies, catalyzers, proteins, or nucleic acids, allowing action on cells, bacteria, viruses, and different biological entities. These complexes are then parted from a compact matrix with a magnetic separation frame. The result of all these processes will be an enriched and concentrated sample of the target entity.

Permanent Magnets

A permanent magnet is an object usually made from a material that is magnetized and forms its own continuous magnetic field. A daily example can be a refrigerator magnet that is used to hold notes on a refrigerator door. Materials that can be easily magnetized and are strongly attracted to a magnet are called ferromagnetic. These usually include elements such as iron, nickel, cobalt, and their alloys, some alloys of rare-earth metals, and some naturally occurring minerals like a lodestone.

Types of Permanent magnets

·         Magnetic metallic elements

·         Composites

·         Rare-earth magnets

·         Single-molecule magnets (SMMs)

·         Single-chain magnets (SCMs)

·         Nano-structured magnets

·         Earth free permanent magnets        

 

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