What are samarium cobalt magnets?
cobalt magnets Samarium are a type of magnet of rare earth. The alloy content ranges from about 25% to 36% Samarium according to weight. These stable, strong magnets are particularly useful for high temperature applications.
The term rare soil does not concern the lack of minerals in the Earth's crust, but at a relatively low concentration of atoms, which are interested in mineral deposits with rare ground. Because they are less concentrated, the extraction of these compounds tends to be more expensive. Some of the rare countries show permanent magnetism such as iron and iron compounds. Magnets made of rare -country minerals are better than iron -based magnets in that their magnetic force is stronger. Smaller parts can be made with the same magnetic field of rare country minerals. At the atomic and subatomical levels, the lowest and most stable energy state of electrons and other charged particles on orbitals or Other movements that are not geometrically symmetrical. This characteristic outside cEntrum is sufficient to attract the magnetic pole of the Earth. In the case of a bite, a naturally occurring magnetic mineral, magnetism was introduced when the rock cooled from the molten lava state, giving the atoms time to balance the magnetic field of the ground before it was frozen into a solid rock.
Magnetic materials have the upper temperature limit, the Curie temperature, above which the material is not long limited to the atomic or molecular level. Samarium cobalt magnets are only seconds to non -dense magnets, but can be used in higher temperature operations. Curie temperatures Samarium cobalt magnets are between 1,100 ° F to 1,300 ° F (600 ° C to 710 ° C), with a favorable working range between 500 ° F to 1,000 ° C (250 ° C to 550 ° C).
Magnes power is usually measured in energy products with megagauss-oersteds or mgoe units. The theoretical limit is 34mgoe. Cobalt magnets samarium with pThey bend from 16 to 32 mgoe. Although they have very high magnetic power, they are extremely fragile and prone to breaking and splitting. Even manipulation is difficult, so the completion of machines using diamond cutting tools is a highly qualified operation.
alloys used in Samarium cobalt magnets are two types. The first is known as a series 1: 5, with one atom Samarium and five cobalt atoms. Their magnetic force ranges from 16 to 25 mgoe. The 2:17 series indicates a spectrum of compounds with the ratios of about two atoms Samarium and 17 cobalts. Some cobalt atoms can be replaced by other atoms of transitional metals such as iron and copper. The magnetic force of these alloys ranges from 20 to 32 mgoe.
Samarium cobalt magnets are produced by various steps and pressing steps. Sintering combines small particles Samarium cobalt materials together. Pressing operations may mean pressing, with pressure applied from one direction or from isotatic pressing in rubber forms where pressure andPlugged in all directions. In production processes, compromises between tolerances, curia temperatures and magnetic strength are carried out.