• Sintered Samarium Cobalt Magnets characteristics

    Samarium Cobalt, is a rare earth magnet, is made of samarium, cobalt and other rare earth materials by the ratio, the composition of this alloy is 35% Samarium, 60% cobalt with the balance being Fe & Cu. , By crushing, pressure type, after sintering made of a magnetic tool material. SmCo magnet is the second strongest magnetic magnet, with a high energy product, very low temperature coefficient, the maximum operating temperature up to 350 ℃, negative temperature is not limited. At maximum operating temperature of 180 ℃ or more, the maximum magnetic energy product (BH)max, coercivity and temperature stability and chemical stability are more than NdFeB permanent magnet materials. However, samarium cobalt is fragile, easy to crack. Samarium Cobalt has a strong resistance to corrosion and oxidation. It is not to be coated because it is difficult to be eroded and oxidized.

     

    Application

    SmCo magnet has a strong anti-corrosion and anti-oxidation, So it is widely used in aerospace, defense military, microwave devices, communications, medical equipment, instruments, instruments, all kinds of magnetic drives, sensors, magnetic processors, Magnetic cranes and so on.

    SmCo 1:5

    SmCo1: 5, by the metal samarium, cobalt or a part of the metal praseodymium instead of metal samarium, according to the proportion of technical formula for the ratio, processed by melting, crushing, pressing molding, sintering etc procedures to be this magnetic materials. The maximum magnetic energy product range is 16-25MGOe, the maximum working temperature is 250 degrees, the maximum magnetic energy product is lower than Sm2Co17, but the mechanical performance is good, easy processing, can be processed into various shapes, small and complex shape can be.

     

    SmCo 2:17

    SmCo2: 17, is made of metal samarium, cobalt, copper, iron, zirconium and other metals, according to a certain proportion of formula ingredients, after smelting, crushing, pressing molding, sintering, aging and other processes made of each brand maximum magnetic energy range of 20- 32MGOe, the maximum working temperature of 350 degrees, this material 2:17 have the best reversible temperature coefficient of some rare earth alloys, typically by -0.03% / ° C., And it has good corrosion resistance,its Magnetic properties could be stronger over the sintered NdFeB when it is in high temperature, it can be widely used. SmCo 2:17 is very brittle, which is difficult to process in complex and thin-wall products, and because of its own brittle characteristics, in the processing, turnover, testing, magnetization process are easy to cause small angle.

     

     

  • Important Tips

    1. SmCo magnets are easy to peel. When dealing with them, you must wear goggles.

    2. Putting the magnets together may cause the magnets to crush, which may cause a potential hazard.

    3. SmCo is made from a sintering process, and all materials are sintered and are very likely to produce cracks inside. 

        The magnet does not have mechanical integrity and only has the function of preparing magnetic fields. Therefore, it 

        is necessary to design a special mechanical system to give the overall system sufficient mechanical reliability.

    4. SmCo5 physical properties better than Sm2Co1,7 SmCo5 slightly easier to process but Sm2Co17 is more fragile. 

        The magnetized Samarium Cobalt magnets must be very careful during assembly and separate from other magnets 

        or magnetically permeable components to prevent mutual absorption and then cause the magnet to break even to 

        human body damage.

    5. Sintered Samarium Cobalt may cause small chips in the production, packaging and transportation process , there 

        will be some visual defects, however, it will not damage its magnetic properties, its stability and anti-demagnetization 

        as long as the defects do not affect the normal assembly Or function.

    6. If you buy non-magnetic products, be sure to be familiar with your magnetizer equipment, so that our products can 

        be magnetized fully saturation.

     

  • Demagnetization Curves at Different Temperature

  • Available Coatings for Sintered SmCo Magnets 

    SmCo magnets are not easy to get corrosion and usually do not require any surface protection. In some cases, however, surface coatings may be used to protect against fragmentation. In addition, as the sintered material is porous, surface coating may be helpful in high vacuum applications.

     

    If the design process is used in acid-base or harsh environments, we can provide the following coating for your reference,in case you need other coatings,please contact our sales for further information.

  • We design magnetizing fixture and process by our own factory nearly 15 years of design experience, that is able to meet the customer application requirements for magnetic circuit design,. With advanced magnetization technology, which can make magnetization to be in saturation status and to improve performance efficiency. We design and magnetized saturated on the inner multi-polar magnetization, outer multi-pole magnetization, planar multi-pole magnetization, bevel or spiral magnetization etc. Welcome to contact us for more information in case you are interested.