Project Description
Sintered Sm-Co Permanent Magnetic Alloy
Sm-Co (1:5 type), Sm-Co (2:17 type)
Samarium cobalt permanent magnet material is an important functional material, which is widely used. It is mainly used for permanent magnet micro and special motors. In special environments such as high temperature and high vacuum, the application of samarium cobalt permanent magnet motors is dominant. In the field of information industry, ring, rectangular and polygonal samarium cobalt permanent magnets are needed in electronic technology and communication. In addition, the application of magnetic ring electroacoustic devices in the third generation mobile phones of mobile communication system, high-grade microphones, hearing aids, pickups, micro speakers and other electroacoustic devices are inseparable from high-performance Samarium cobalt permanent magnets.
Magnetic Property
| Type | Alloy | Remanence (min) | Coercive force Hcb(min) | Intrinsic coercive force Hci(min) | Maximum energy product (BH)max | ||||
| /kG | /T | /kOe | kA.m-1 | /kOe | /kA.m-1 | /MGOe | /kJ.m-3 | ||
| Sm-Co(1:5 type) | S14 | 7.3 | 0.73 | 6.5 | 517 | 15 | 1194 | 13-15 | 103-119 |
| S16 | 7.8 | 0.78 | 7 | 557 | 15 | 1194 | 15-17 | 119-135 | |
| S18 | 8.4 | 0.84 | 7.5 | 597 | 15 | 1194 | 17-19 | 135-151 | |
| S20 | 8.8 | 0.88 | 8 | 637 | 15 | 1194 | 19-21 | 151-167 | |
| Sm-Co(2:17 type) | S22 | 9.2 | 0.92 | 7 | 557 | 9.5 | 756 | 20-24 | 159-191 |
| S26 | 10 | 1 | 8 | 637 | 9.5 | 756 | 24-28 | 191-223 | |
| S30 | 11.2 | 1.12 | 8 | 637 | 10 | 756 | 28-32 | 223-225 | |
| S22H | 9.2 | 0.92 | 8 | 637 | 15 | 1194 | 20-24 | 159-191 | |
| S26H | 10 | 1 | 9 | 716 | 15 | 1194 | 24-28 | 191-223 | |
Physical Properties
| Type | Average temperature coefficient αEr/%.K-1 | Density /g.cm-3 | Electrical resistance /μΩ.m | Hardness /Hv | Compress strength /MPa | Thermal expansion coefficient /10-6.K-1 | Curie temperature /℃ |
| Sm-Co(1:5 type) | 0.04 | 8.2 | 50 | 500-550 | 290 | 5.6(//)13(ʟ) | 700-750 |
| Sm-Co(2:17 type) | 0.03 | 8.4 | 80 | 500-550 | 520 | 6.5(//)13(ʟ) | 800-850 |
Features
Sintered Sm-Co Permanent Magnetic Alloys are a group of rare-earth permanent magnetic materials manufactured by Powder metallurgy. They take on a good temperature stability, high coercive force and high energy product.
Applications
Red Sm-Co Permanent Magnetic Alloys are typically used for manufacturing timekeepers, mini high efficiency instruments, magnetic apparatus, and traveling wave tubes, etc.
