Permanent Magnet Probe For Logging Tool While Drilling,Magnetic Assemblies

What are the components of samarium and cobalt?

SmCo₅ magnet is composed of SmCo alloy with Sm Co ratio of 1:5. According to weight, Sm accounts for 36% of the total. This SmCo alloy usually contains 36% Sm and a small amount of Co. This series of SmCo magnets can provide a maximum magnetic energy product of 25 MGOe and a reversible temperature coefficient of - 0.05% / ℃. In addition, this series is easier to calibrate to a specific magnetic field than Sm₂Co₁₇ series. The Sm₂Co₁₇ magnet consists of SmCo alloy with a SmCo ratio of 2:17. It also contains other elements, such as iron, copper, zirconium and hafnium in a small amount. The magnetic energy product of this property is higher, up to 32 MGOe, and the reversible temperature coefficient is - 0.03% / ℃.

SmCo Series 1:5
SmCo Series 1:5 has one atom of rare earth samarium and five atoms of cobalt. By weight this magnet alloy will typically contain 36% samarium with the balance cobalt. SmCo magnets generally have a reversible temperature coefficient of -0.05%. The maximum working temperature is about 350 ℃.

SmCo Series 2:17
SmCo Series 2:17 are age-hardened with a composition of two atoms of rare-earth samarium and 13-17 atoms of transition metals(TM). The TM content is rich in cobalt, but contains other elements such as iron and copper.
Other elements like zirconium, hafnium, and such may be added in small quantities to achieve better heat treatment. By weight, the alloy will generally contain 25% of samarium. The maximum energy of these alloys ranges from 24 to 30 MGOe. SmCo magnets generally have a reversible temperature coefficient of -0.03% ℃. The maximum working temprature is 350℃

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