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> SmCo magnets > Discription of SmCo

Discription of SmCo

Discription of SmCo

Product Detail:

SmCo magnet is a type of magnetic material made from rare earth metal samarium and strategic metal cobalt-main elements, with iron, copper, zirconium and praseodymium, and produced by a serial of process melting, milling, pressing, sintering and aging. It has high magnetic properties (high energy product, high coercivity, high remanence), very low temperature coefficient (-0.030% / °C), high working temperature (Maximum working temperature reaches 350°C), no negative temperature limitation, and excellent corrosion resistance. At working temperature above 180°C,  its maximum energy product, temperature stability and chemical stability are better than NdFeB material. Therefore, SmCo magnet is widely used in aerospace, defense industry, microwave devices, communications, medical equipments, instruments, wind power, a variety of magnetic drives, sensors, magnetic processors, high-end motors, etc.

According to the different components of the SmCo5 and Sm2Co17, respectively, as the first generation and the two generation rare earth permanent magnetic material. Because of its raw materials are scarce, the price is expensive and limit the development. Samarium cobalt (SmCo) as the second generation rare earth permanent magnet, not only has a high magnetic energy product (14-28MGOe) and reliable coercivity, and exhibits excellent temperature characteristics in rare earth permanent magnet series. Compared with the NdFeB, SmCo is more suitable for working in high temperature environment.Sm2Co17 (SmCo permanent magnet).

Magnetic properties:Residual Br>1.05T (>10.5kGs)

Magnetic coercivity of HcB>676kA/m (>8.5kOe)

The intrinsic coercivity of Hcj>1194kA/m (>15kOe)

The maximum energy product (BH) max>209.96kJ/m3 (26-30MGs.Oe)

Br temperature -0.03%/ °C

Reversible permeability μ 1.03H/

The Curie temperature of Tc°C 670-850

Physical characteristics:

The density of D 8.4g/cm3

The resistivity ρ 8500 Ω

The flexural strength of 127.4MPa

The compressive strength of 509.6MPa

The coefficient of thermal expansion of 9*10-6 / C.