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

TypeAlloyRemanence
(min)
Coercive force
Hcb(min)
Intrinsic coercive force
Hci(min)
Maximum energy product
(BH)max
/kG/T/kOekA.m-1/kOe/kA.m-1/MGOe/kJ.m-3
Sm-Co(1:5 type)S147.30.736.551715119413-15103-119
S167.80.78755715119415-17119-135
S188.40.847.559715119417-19135-151
S208.80.88863715119419-21151-167
Sm-Co(2:17 type)S229.20.9275579.575620-24159-191
S2610186379.575624-28191-223
S3011.21.1286371075628-32223-225
S22H9.20.92863715119420-24159-191
S26H101971615119424-28191-223

Physical Properties

TypeAverage temperature coefficient
αEr/%.K-1
Density /g.cm-3Electrical resistance
/μΩ.m
Hardness /HvCompress strength /MPaThermal expansion coefficient /10-6.K-1Curie temperature /
Sm-Co(1:5 type)0.048.250500-5502905.6(//)13(ʟ)700-750
Sm-Co(2:17 type)0.038.480500-5505206.5(//)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.