Special-shaped Sintered SmCo Magnets for aerospace, defense industry, microwave devices, communications, medical equipments, instruments, wind power, a variety of magnetic drives, sensors, magnetic processors, high-end motors…
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 above180°C, its maximum energy product, temperature stability and chemical stability are better than NdFeB material. Therefore,
According to the different components of the SmCo5 and Sm2Co17, respectively, they are 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 magnets).
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.
Specification
SmCo Other Physical Properties
SmCo5
Sm2Co17
Temperature Coefficent of Br(%/°C)
-0.05
-0.03
Temperature Coefficent of iHc(%/°C)
-0.3
-0.2
Curie Temperature(°C)
700-750
800-850
Density(g/cm3)
8.2-8.4
8.3-8.5
Vickers Hardness(HV)
450-500
500-600
Working Temperature(°C)
250
350
Applications
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.
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