1：5&2：17 Smco Magnet

1：5&2：17 Smco magnet

Samarium cobalt magnet is a rare earth magnet, and the alloy content of samarium accounts for about 25%-36% of the total weight. This permanent strength magnet is particularly useful in high-temperature operations.

The term rare earth does not refer to the scarcity of minerals in the earth's crust, but rather to the relatively low atomic concentration of rare earth deposits. Due to the low concentration, the cost of extracting these compounds is high. Some rare earth minerals show permanent magnetism, such as iron and iron compounds. Magnets produced by rare earth minerals are superior to magnetic iron because of their stronger magnetic force.

Magnetism is due to a tiny non-zero net charge distribution. At the atomic and subatomic levels, the lowest and most stable energy states of electrons have no geometric symmetry with charged particles in orbit or other motion. This off-center feature is enough to be attracted to the Earth's magnetic poles. Take natural magnets, for example. Magnetism occurs when magma cools rock.

Magnetic materials have a temperature upper limit, and materials are no longer limited to the atomic or molecular level above the Curie temperature. Samarium-cobalt magnets are the second strongest after neodymium magnets, but can be used for higher temperature applications. Samarium-cobalt magnets have a Curie temperature of 600-710 degrees Celsius and a good working range of 250-550 degrees Celsius.

The strength of a magnet is usually measured in MGOe. The theoretical limit is 34MGOe. Samarium-cobalt magnets range from 16 to 32MGOe. Although they have very high magnetic forces, they are very brittle and easily broken and damaged. Because of the difficulty of processing, processing with diamond tools is a highly technical operation.

The alloy applications of samarium-cobalt magnets can be divided into two categories. The first one, called the 1:5 series, has one samarium atom and five cobalt atoms. Their magnetic fields range in strength from 16 to 25 milligoray. The 2:17 series refers to compounds with 2 samarium atoms and 17 cobalt atoms. Some cobalt atoms can be replaced by transition metal atoms such as iron and copper. These alloys have magnetic forces ranging from 20 to 32 milligray.

Samarium-cobalt magnets are made by different sintering and forging steps. Sintered samarium-cobalt material particles are fused together. In the production process, factors such as tolerance, Curie temperature, and magnetic induction intensity should be weighed.