Active Member
|
[China]
Address: Mianyang Hengxin Magnetic Material Co., Ltd. No.96 Wenwu Road, Economic Development Zone, Mianyang City, Sichuan Province, China.
Contact name:admin
Mianyang Henshin Magnetic Material Co., Ltd. |
|
|
Samarium cobalt magnet magnetic property is not weak than Ndfeb magnet, with high coercivity, good temperature stability (the highest use temperature is 250 to 550℃, Curie temperature is 700 to 800℃) and other characteristics, and samarium cobalt corrosion resistance, without electroplating treatment, is widely used in many fields.
There are two families of Sm-Co magnets — SmCo5 and Sm2Co17.
SmCo5 has a hexagonal crystal structure that consists of five atoms of cobalt for each samarium atom. SmCo5 magnets are also known as Sm-Co 1:5, samarium-cobalt 1:5 magnets, SmCo series 1:5 magnets, or sometimes as 1:5 magnets.
Sm2Co17 has a rhombohedral crystal structure, which is obtained by replacing Sm atoms in the SmCo5 hexagonal structure with a pair of Co atoms. Other elements are added to improve properties such as intrinsic coercivity or reversible temperature coefficient. Elements such as iron, copper, hafnium, gadolinium, terbium, erbium and zirconium are commonly used. Sm2Co17 is also known as samarium-cobalt 2:17, SmCo Series 2:17, Sm(Co,Fe,Cu,Zr)z or sometimes as 2:17 magnets.
1:5 has a maximum energy product, (BH)max, around 20 MGOe. The reversible temperature coefficient of residual induction of SmCo5 is about -0.04%/°C. 2:17 has a maximum energy product (BH)max as high as 35 MGOe. The reversible temperature coefficient of residual induction is about -0.035%/oC.
Both SmCo5 and Sm2Co17 have very high intrinsic coercivity, Hci, a measurement of resistance to demagnetization. They also have very good corrosion resistance, thermal stability and resistance to radiation. Although brittle, they do not require a surface coating and can be used at temperatures up to 300oC.
| 牌号 | 剩磁 | 矫顽力 | 内禀矫顽力 | 最大磁能积 | 温度系数 | 最大工作温度Max.oper. Temp | 密度Density | |||||||||||||
| Grade | Remanece ( 20°C) | Coercivity (20°C) | Intrinsic coercive force ( 20°C ) | Energy Density | Temp.coefficient %/C | |||||||||||||||
| Br | Hcb | Hcj | (BH) max | 20-100°C | 20-150°C | |||||||||||||||
| Typ. | min | Min | Min | Typ. | min | Tk (Br) typ. | Tk (Hcj) typ. | Tk (Br) typ. | Tk (Hcj) typ | |||||||||||
| KGs | Tesla | KGs | Tesla | KOe | KA/m | KOe | KA/m | MGOe | KJ/m3 | MGOe | KJ/m3 | %/°C | %/°C | %/°C | %/°C | °C | °F | g/cm3 | ||
| SmCo5 | HSMAG/XG16 | 8.50 | 0.85 | 8.00 | 0.80 | 7.50 | 597 | 18.00 | 1433 | 16.00 | 127 | 14.00 | 111 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 |
| HSMAG/XG18 | 9.00 | 0.90 | 8.50 | 0.85 | 8.00 | 664 | 18.00 | 1433 | 18.00 | 143 | 16.00 | 127 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 | |
| HSMAG/XG20 | 9.50 | 0.95 | 8.80 | 0.88 | 8.50 | 677 | 15.00 | 1195 | 20.00 | 159 | 18.00 | 143 | -0.04 | -0.14 | -0.045 | -0.22 | 250 | 482 | 8.1-8.3 | |
| Sm2Co17 | HSMAG/XG24A | 10.30 | 1.03 | 9.50 | 0.95 | 8.50 | 677 | 25.00 | 1990 | 24.00 | 191 | 22.00 | 175 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 |
| HSMAG/XG26A | 10.50 | 1.05 | 10.30 | 1.03 | 9.00 | 716 | 25.00 | 1990 | 26.00 | 207 | 24.00 | 191 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG28A | 10.70 | 1.07 | 10.50 | 1.05 | 9.50 | 756 | 20.00 | 1592 | 28.00 | 223 | 26.00 | 207 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG30A | 11.00 | 1.10 | 10.70 | 1.07 | 10.00 | 796 | 20.00 | 1592 | 29.00 | 231 | 27.00 | 215 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG30EH | 11.20 | 1.12 | 10.80 | 1.08 | 10.20 | 812 | 20.00 | 1592 | 29.50 | 235 | 28.00 | 223 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG32A | 11.50 | 1.15 | 10.90 | 1.09 | 10.30 | 820 | 20.00 | 1592 | 30.50 | 243 | 28.50 | 226 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG33EH | 11.70 | 1.17 | 11.00 | 1.10 | 10.50 | 836 | 20.00 | 1592 | 31.50 | 251 | 29.00 | 235 | -0.03 | -0.18 | -0.035 | -0.19 | 350 | 662 | 8.3-8.5 | |
| HSMAG/XG18AH | 10.00 | 1.00 | 8.50 | 0.85 | 8.00 | 637 | 30.00 | 2388 | 18.00 | 143 | 15.00 | 119 | -0.02 | -0.15 | -0.03 | -0.16 | 400 | 752 | 8.3-8.5 | |
| Note | For large bread products, no thin size is allowed, because SmCo's huge brittleness will easily cause breakage during assembly | |||||||||||||||||||
Mianyang Hengxin Magnetic Materials Co., Ltd. was founded in 1999, specializing in the manufacture and development of sintered samarium cobalt permanent magnet materials and devices; after years of development, it has formed a production capacity of 500 tons of samarium cobalt permanent magnet materials per year, and is the main manufacturer of samarium cobalt permanent magnet materials and devices in China.
