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A neodymium magnet is a type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron, and boron to form the Nd2Fe14B tetragonal crystalline structure. It’s also known asNdFeB, NIB, or Neo magnet. This material is currently the strongest type of permanent magnet.

There are two principal neodymium magnet manufacturing routes:

1. The classical powder metallurgy or sintered magnet process
2. The rapid solidification or bonded magnet process

Sintered Neo magnets are prepared by pulverizing an ingot precursor and liquid-phase sintering the magnetically aligned powder into dense blocks which are then heat treated, cut to shape, surface treated and magnetized. Currently, between 45,000 and 50,000 tons of sintered neodymium magnets are produced each year, mainly from China and Japan.

Bonded Neo magnets are prepared by melt spinning a thin ribbon of the Nd-Fe-B alloy. The ribbon contains randomly oriented Nd2Fe14B nano-scale grains. This ribbon is then pulverized into particles, mixed with a polymer and either compression or injection molded into bonded magnets. Bonded magnets offer less flux than sintered magnets but can be net-shape formed into intricately shaped parts and do not suffer significant eddy current losses. There are approximately 5,500 tons of Neo bonded magnets produced each year. In addition, it is possible to hot press the melt spun nanocrystalline particles into fully dense isotropic magnets, and then upset-forge/back-extrude these into high energy anisotropic magnets.

Neodymium magnets have replaced Alnico and ferrite magnets in many of the myriad applications in modern technology where strong permanent magnets are required, because their greater strength allows the use of smaller, lighter magnets. Some examples are

• head actuators for computer hard disks
• magnetic resonance imaging (MRI)
• magnetic guitar pickups
• loudspeakers and headphones
• magnetic bearings and couplings
• permanent magnet motors

There have been numerous articles written on the healing properties of Neodymium Magnets that you can read in books or on the internet. Reports say that Magnetic Therapy is a safe, non-invasive method of applying magnetic fields to the body for therapeutic purposes. It accelerates the natural healing process, provides natural pain relief, arthritis pain relief and other ailments and improves sleep without any adverse side effects. 
Permanent magnets have been used in a variety of medical practices dating even back to the Egyptians. Even 500 years ago, books were written on how to use magnets for medical benefit. Many have wondered if magnetic fields work on the human body, well an MRI would not work if they did not. There have been many articles written on magnet therapy and its successful use for sports injuries, in medicine, and for chronic pain relief. The key to the successful use of magnetic therapy is to use Neodymium magnets, also called earth magnets or rare earth magnets, that produce very high-energy magnetic fields. These super strong magnet can actual lift small metal objects like key chains, spoons, any object up to almost 1/3 of a pound! And attract pieces of metal that are a few inches away. There is no doubt that the magical properties of magnets hold amazing powers. Magic and Magnets come from the same latin root. There have been many studies that report Neodymium magnets can change the molecular structure of the blood and polarize the magnetic fields that surround our bodies, thereby creating healing in our body systems. If you are looking for Strong Neodymium magnet jewelry, these rings, bracelets and anklets fit the bill.

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DealExtreme – Neodymium NIB Ultra-Strong Magnet Spheres (5mm/100 pack)

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