With the updated science and technology, the choice of materials has
become the object of scientists focused discussion. And the development
of new materials, rare earth magnet greatly
improved their level of application of rare earth magnets of high-tech
industries, and its application technology in high-tech fields. The new
materials include rare earth magnets rare earth magnet permanent magnet
materials, rare earth magnets luminescent materials, hydrogen storage
materials of rare earth magnets , rare earth magnets catalyst materials,
rare earth magnets and other rare earth magnets ceramic materials and
new materials such as rare earth magnets giant magnetostrictive material
, giant magnetoresistance materials, magnetic refrigeration materials,
optical refrigeration materials , magneto-optical storage materials.
Rare-earth
magnet alloy composition because of different magnetic materials , the
current can be divided into three categories: ( 1 ) rare earth magnets -
cobalt permanent magnet materials : SmCo5, Sm2Co17; (2) rare earth
magnets - iron permanent magnet materials : Nd2Fe14B; (3) Rare magnet
iron nitrogen (RE-Fe-N system ) or rare earth magnet iron-carbon
(RE-Fe-C system ) permanent magnet materials .
The highest
performance magnets are rare earth magnets , rare earth magnets and
Nd-Fe is the most powerful magnet. However, in the above 200 ° C
environment , is the most powerful samarium cobalt magnet .
Types of magnets
Magnet
, the magnet should be called , in English Magnet, magnet now mainly
divided into two categories, one is soft , one is hard magnetic ; soft
includes silicon steel and soft iron core ; hard magnetic include alnico
, SmCo , ferrite and NdFeB , which, samarium cobalt magnet is the most
expensive , the most expensive is the ferrite magnets , NdFeB magnets
are the highest performance , but the performance of the most stable ,
best temperature coefficient Alnico magnet is , the user can select a
different hard magnetic products according to different needs.
Application magnets
Currently
NdFeB permanent magnet applications we have developed have been widely
used in energy, transportation, machinery, medical , computers,
household appliances and other fields. Another important application of rare earth neodymium magnets
luminescent materials are rare earth magnets tricolor energy-saving
lamps, high-end consumer market trends of magnets , rare earth magnets
trichromatic phosphor It uses photoluminescent materials, rare earth
magnet high luminous efficiency energy saving lamps , saving electricity
, its application has been developed around the world attention.
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