Abstract
Constant magnets are applied in such fields as electric equipment and electric generators with fixed rotor. Rare earth metal neodymium is well known as promising material. Production of magnets by sintering three elements (neodymium, iron and boron) is one the most promising methods. But there are difficulties in choosing the right temperature for sintering and further processing. Structure and properties of the product, consisted of rare earth metals, was analyzed. X-ray analysis of the resulting product and the finished constant magnet was performed. Vickers microhardness was obtained.
Highlights
The permanent magnets (PM) are widely used in various fields of science and technology, such as radio and electrical engineering, electronics, devices for recording information, microelectronics, etc
The main aim of modern technology is to decrease sizes at the same time with the saving high operating characteristics. This requirement is attributed to the PM
The most promising materials are magnets based on cobalt, neodymium and samarium
Summary
The permanent magnets (PM) are widely used in various fields of science and technology, such as radio and electrical engineering, electronics, devices for recording information, microelectronics, etc. The main advantage of the neodymium-iron-boron magnets in comparison with the samarium-cobalt alloy is the price and the scale of production Such class of rare-earth compounds shows record values of residual magnetic induction Br = 1.1-1.2 T and coercive force Hc = 950-1750 kA/m. One of the most important benefits of SPS-method is its high sintering speed, which can effectively restrain the grain growth and ensure the formation of a dense fine grain structure in a short time. This is the purpose of this paper.
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