In today’s advanced world, magnets have
been deemed crucial for the production of an enormous number of goods in automobile,
electronics and clean-energy production industries. Rare earth magnets are basically
permanent magnets that are comprised of alloys of rare earth elements. Introduced
in the early 1980’s neodymium is the strongest as well as the most affordable
kind of rare earth magnet that exists today. NIB is basically created from
Iron, Boron and neodymium itself. Such magnets are now commercially available
in a wide variety of shapes, sizes, grades and surface coating. Neo magnets are
metallic in appearance, extremely strong for their size and can pull their own
weight nearly thousand times over.
Because of this amazing ability, these super magnets are used in a wide
array of incredibly versatile applications including computer apparatus,
jewelry as well as toys among many others.
Some of the vital magnet properties
considered to judge the quality of each specific magnet includes the strength
of the magnetic field i.e. remnance, resistance towards demagnetization i.e.
coercivity and curie temperature at which point the magnet would demagnetize.
Fortunately for NIB, they have a very high coercivity and resonance rate making
them ideal products for industrial use. However, neodymiums are susceptible to
temperature fluctuations and can crack, catch fire, lose their magnetism and
basically fail to function properly when not kept in ambient temperatures (or
above their set curie temperature). Moreover, the strength of any neodymium
magnets is measured through a process known as grading. Such as, higher value
indicates a stronger magnet generally ranging from N35 to N52. Due to a large
proportion of iron in neo magnets, they are easily prone to corrosion and
therefore must be coated with a protective layer in order to ensure durability
and long life. Among all other layers, a triple nickel-copper-nickel coat has
proved to be most effective and long lasting for maximum energy output and
usage. Neodymium magnets are readily available in many shapes such as disc,
rod, ring, block, cylinder, sphere and even customized in accordance to the
user’s requirements. Among all sizes the flat and round disc magnets have
proved to be the most common and economical neodymium magnets. They can be
magnetized axially as well as through the thickness and can be found within a
wide range of diameters. One common application of disc NIB is to be fixed into
drilled holes.
However, it is integral for all users to
handle such strong magnets with extreme caution in order to prevent any long
term injury. Neo magnets of such immense strength towards all metals should be
kept away from children and not treated as toys whatsoever.
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