Why Samarium Cobalt Magnets Is More Effective Amongst REE? - PowerPoint PPT Presentation

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Why Samarium Cobalt Magnets Is More Effective Amongst REE?

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Samarium Cobalt magnets or SmCo are the first rare earth permanent magnetic material developed in the 1970’s. It offers the second highest energy density of the 4 main magnetic materials used commercially. – PowerPoint PPT presentation

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Title: Why Samarium Cobalt Magnets Is More Effective Amongst REE?


1
Why Samarium Cobalt Magnets Is More Effective
Amongst REE?
2
  • At the present time, it has been proved that
    there are indeed plentiful of these elements,
    just not often found in concentrations able to be
    mined economically. Last year alone 124,000 tons
    of REEs were mined, with another 130 million in
    reserve worldwide.

3
  • There are 17 rare earth elements, including the
    15 elements in lanthanide series and two other
    elements i.e. Yttrium and Scandium. These are
    found with the lanthanides in nature. The least
    abundant of the REE, thulium is found with 200
    times which has more abundancy than gold.

4
  • Rare Earth Magnets are strong permanent magnets
    which are not exactly rare to find but it takes a
    lot of processing to be manufactured. These are
    the strongest types of permanent magnets
    producing significantly stronger magnetic fields.
    Samarium Cobalt being one of the two Rare Earth
    Magnets is also known as SmCo5. This magnet can
    withstand higher temperatures than a Neodymium
    magnet, the other type of rare magnet.

5
There Are Two Types Of Rare Earth Magnets
6
Neodymium Magnets
  • These small, metallic magnets are made from
    neodymium, iron, boron, and other transitional
    metals and come in disks, rings, and blocks.
    Neodymium magnets are sensitive to temperature
    and corrosion, which is why they are generally
    coated.

7
Samarium Cobalt Magnets
  • These small but strong magnets, made from
    samarium, cobalt, and iron also come in simple
    shapes like blocks, disks, and rings. They do not
    corrode and also do not require any coating.

8
  • We all must have hard about rare earth magnet but
    do you know what are they used for? Neodymium and
    samarium magnets can be used for anything
    starting from commercial to industrial purposes.
    There are a variety of useful applications like

9
  • Permanent magnet motors in cordless tools
  • Satellite systems
  • Sensors
  • Mounting tools
  • MRI machines
  • Oil filters
  • Traveling wave tubes
  • Toys
  • Welding clamps
  • Audio speakers
  • Bicycle dynamos
  • Computer disc drives
  • Linear actuators
  • Mechanically powered flashlights
  • Geocatching
  • Industrial equipment protection
  • Jewelry closures

10
  • Ideal for very high temperature applications,
    Samarium Cobalt maintain their magnetic strength
    at higher temperatures. The magnetic fields
    produced from Samarium Cobalt magnets ranges from
    0.8 to 1.15 Tesla. SmCo magnets are highly
    durable as it displays excellent corrosion
    resistance and temperature stability that it can
    operate in conditions up to 500C without
    suffering any magnetization loss.

11
  • The manufacturing of neodymium magnets began in
    1983. Neodymium has a bright, silvery metallic
    luster as these are made of an alloy of iron,
    boron and neodymium, a rare earth element.

12
  • These magnets are brittle and are often plated
    with a protective coating of metals such as
    nickel to help protect from breaking and
    chipping. Being one of the reactive rare earth
    metals, it quickly oxidizes in air. It is highly
    corrosive and come in many sizes, shapes and
    colors.

13
  • Samarium Cobalt magnets manufacturers regularly
    assembled these into products using epoxies where
    the surface is properly prepared. These are
    sintered more expensive than Neodymium Iron Boron.

14
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