Samarium cobalt magnets are rare earth permanent magnet materials with dual advantages of high temperature resistance and corrosion resistance, and are high-end special magnetic materials specially used for harsh working environments such as high temperature, corrosion, humidity and strong interference. As a new generation of rare earth magnets after neodymium iron boron, samarium cobalt magnets have excellent comprehensive performance, including ultra-high temperature resistance, excellent corrosion resistance, stable magnetic field, strong anti-demagnetization ability and low temperature coefficient, and are widely used in aerospace, military industry, petrochemical, marine equipment, high-end precision instruments and other high-end fields with harsh working conditions.

In terms of high temperature resistance performance, samarium cobalt magnets are divided into SmCo5 and Sm2Co17 two series. The maximum working temperature of SmCo5 series can reach 250℃, and the maximum working temperature of Sm2Co17 series can reach 350℃. Under continuous high-temperature working conditions, the magnetic attenuation rate of samarium cobalt magnets is less than 1% per year, which is far better than neodymium iron boron magnets which are easy to demagnetize at high temperature. Even in instantaneous high-temperature impact environments, samarium cobalt magnets can maintain stable magnetic field output without permanent magnetic loss, which fully meets the long-term stable operation requirements of high-temperature industrial equipment.

In terms of corrosion resistance and oxidation resistance, samarium cobalt magnets have natural excellent chemical stability. Different from neodymium iron boron magnets which are easy to rust and corrode and need complex surface coating protection, samarium cobalt magnets have strong resistance to acid and alkali corrosion, salt spray corrosion and high-temperature oxidation. They can work stably in marine humid salt spray environment, chemical acid-base environment and high-temperature oxidation environment for a long time without rusting, corrosion and performance attenuation, and have ultra-long service life. In addition, samarium cobalt magnets have extremely low temperature coefficient, and the magnetic field change is extremely small in the range of -60℃ to 350℃, with strong environmental adaptability.

In terms of magnetic performance, samarium cobalt magnets have high coercivity and strong anti-external magnetic interference ability, and will not produce magnetic field distortion and demagnetization under the action of external strong magnetic field and mechanical vibration. The magnetic field uniformity is high, which is very suitable for precision detection instruments and high-precision motor equipment. Although the magnetic energy product of samarium cobalt magnets is slightly lower than that of high-grade neodymium iron boron, their stability and environmental adaptability are far higher than all neodymium iron boron and ferrite magnets, which is irreplaceable in harsh environment scenarios.

We provide customized production and batch supply services of high temperature resistant and corrosion resistant samarium cobalt magnets, covering various shapes such as square, circular, annular, arc and special-shaped, and support precision processing such as drilling, grooving and fine grinding. All products are strictly tested for high-temperature resistance, salt spray corrosion and magnetic stability to ensure that they meet the application standards of high-end harsh environments. Samarium cobalt magnets are mainly used in marine navigation equipment, petrochemical detection instruments, aerospace precision components, military electronic equipment, high-temperature industrial motors and sensors, providing core stable magnetic component support for high-end equipment in extreme working environments.