What are SmCo magnets?

A samarium–cobalt (SmCo) magnet, a type of rare-earth magnet, is a strong permanent magnet made of two basic elements samarium and cobalt. Samarium Cobalt (SmCo) magnets are composed of Samarium, Cobalt and Iron, these rare earth magnets are extremely strong for their small size, metallic in appearance and sable physical property .Those magnets could be in simple shapes also could be made according to customer's need. Besides a max working temperature of 300ºC, it has remarkable resistance against corrosion and oxidation. Hence, it may be used in aeronautic and space industries among others.

What are features of SmCo magnets?

Samarium cobalt magnets are hard and brittle and may chip or break if dropped.

They have high magnetic properties

Samarium cobalt magnets offer good thermal stability

Samarium cobalt magnets are resistant to corrosion

Samarium cobalt magnets resistant to demagnetization

How are SmCo magnets made?

Samarium Cobalt magnets offer strong resistance to demagnetization. All Samarium Cobalt magnets cannot be formed with conventional drilling, turning or milling processes, and must be ground before they are magnetized. Additionally, large or complex assemblies are usually magnetized prior to assembly. Standard tolerances for Samarium Cobalt magnets are +/-.005 for ground dimensions.

1:5 alloy material

1:5 offers 16 MGOe (energy product) to 22 MGOe and is made up of approximately 50% samarium and 50% cobalt. The 1:5 series has a maximum recommended operating temperature of 250°C. SmCo 1:5 magnets require lower field strengths than 2:17 materials to magnetize. In some instances, 1:15 material may be magnetized with multiple poles, provided that a magnetizing fixture is available.

2:17 alloy material

2:17 offers 24 MGOe to 32 MGOe and is composed of about 25% samarium, 5% copper, 18% iron, 2% hafnium or zirconium, with the remainder being cobalt. The 2:17 series of has a maximum operating temperature of 350°C. Special grades of 2:17 are available which can operate to even higher temperatures. SmCo 2:17 requires extremely high magnetizing fields, and multiple pole magnetization is not possible.

What are Samarium Cobalt used for?

Computer disc drives, sensors, traveling wave tubes, linear actuators, satellite systems, motors