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What material is neodymium iron boron made of?
Time： 2023-03-17
Neodymium iron boron permanent magnet material is a permanent magnet material based on the intermetallic compound Re2Fe14B. The main components are rare earth elements neodymium (Nd), iron (Fe), and boron (B).
Neodymium iron boron, in simple terms, is a type of magnet. Unlike the magnets we usually see, it is known as the "magnetic king" due to its excellent magnetic properties. Neodymium iron boron contains a large amount of rare earth elements neodymium, iron, and boron, which are characterized by hardness and brittleness. Due to the susceptibility of the surface to oxidation and corrosion, neodymium iron boron requires surface coating treatment. Surface chemical passivation is one of the good solutions.
As a type of rare earth permanent magnet material, neodymium iron boron has high magnetic energy product and coercive force, and the advantages of high energy density have made neodymium iron boron permanent magnet materials widely used in modern industry and electronic technology, making it possible to miniaturize, lighten, and thin equipment such as instruments, electroacoustic motors, magnetic separation and magnetization.
The advantages of neodymium iron boron are high cost-effectiveness and good mechanical properties; The shortcomings lie in the low working temperature, poor temperature characteristics, and susceptibility to powdering corrosion. It is necessary to adjust its chemical composition and adopt surface treatment methods to improve it in order to meet the requirements of practical applications.
Neodymium iron boron is divided into two types: sintered neodymium iron boron and bonded neodymium iron boron. Bonded neodymium iron boron has magnetism in all directions and is corrosion-resistant; Sintered neodymium iron boron is prone to corrosion and requires coating on its surface, generally including zinc plating, nickel plating, environmentally friendly zinc plating, environmentally friendly nickel plating, nickel copper nickel plating, environmentally friendly nickel copper nickel plating, etc. Sintered neodymium iron boron is generally divided into axial magnetization and radial magnetization, depending on the required working surface.
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What are the differences between neodymium iron boron permanent magnets and samarium cobalt?
The difference between neodymium iron boron permanent magnets and samarium cobalt - in terms of magnetism, neodymium iron boron magnets are known as the "magnetic king" in the industry, while samarium cobalt magnets have a lower magnetic strength compared to neodymium iron boron.
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