Rare earth iron nitrogen permanent magnet materials are the fourth generation of rare earth permanent magnet materials. Domestic industrialization development is limited.

Rare earth permanent magnet materials are permanent magnet materials made from alloys composed of rare earth metals and transition metals. At present, rare earth permanent magnet materials have developed to the third generation. NdFeB permanent magnet materials are representative products of the third generation of rare earth permanent magnet materials. They have high performance and small size. The fourth generation of rare earth permanent magnet materials is in the process of research and development. The representative product is rare earth iron nitrogen permanent magnet materials.

Driven by the development of new energy vehicles, wind power, industrial robots, consumer electronics, energy-saving home appliances, power tools and other industries, the demand for high-performance rare earth permanent magnet materials continues to grow. It is expected that by 2026, the global NdFeB permanent magnet material market demand will Reaching about 147,000 tons, the average annual compound growth rate will reach about 13.9% from 2022 to 2026. It can be seen that the global market for high-performance rare earth permanent magnet materials has strong development momentum.

NdFeB permanent magnet material also has certain shortcomings, such as its low Curie temperature, large coercive force temperature coefficient, poor stability in high temperature scenarios, and its chemical stability is also insufficient, so its performance is still improving. Improvement, while the pace of research on new rare earth permanent magnet materials is also accelerating. As the fourth generation of rare earth permanent magnet materials, rare earth iron nitrogen permanent magnet materials have attracted attention in their research and development.

According to the “2022-2026 Rare Earth Iron Nitrogen Permanent Magnetic Materials Industry In-depth Market Research and Investment Strategy Suggestions Report” released by the Industrial Research Center It shows that the magnetic properties of the rare earth iron nitrogen permanent magnet material are equivalent to those of the neodymium iron boron permanent magnet material. It is a high-performance rare earth permanent magnet material and has a high Curie temperature, good thermal stability, high anisotropic field, and corrosion resistance. It has strong resistance and excellent oxidation resistance, making up for the shortcomings of NdFeB permanent magnet materials. It is a representative product of the fourth generation of rare earth permanent magnet materials and can be used in scenarios with more stringent conditions.

Globally, research in the field of rare earth iron-nitrogen permanent magnet materials started earlier in Europe, and Japan started later than Europe. However, there are many research companies and progress is faster. Some companies have achieved large-scale production. For example, in the 21st century In the early days, Toshiba was able to mass-produce samarium iron nitrogen magnetic powder.

The Chinese government pays great attention to the development of the permanent magnet material industry. Many scientific research institutions, high-efficiency companies, and enterprises are conducting research on rare earth iron-nitrogen permanent magnet materials, such as Peking University, Sichuan University, Zhejiang University, Institute of Physics of the Chinese Academy of Sciences, and the Third Ring Road of the Chinese Academy of Sciences. In the early 1990s, Academician Yang Yingchang invented a new rare earth permanent magnet material of neodymium iron nitrogen series. The high-performance anisotropic neodymium iron nitrogen magnetic powder prepared passed the scientific and technological achievement appraisal in 1996 and was constructed at Beijing Hengyuan Valley Technology Co., Ltd. Established a high-performance samarium iron nitrogen magnetic powder and magnet production line.

Industry analysts said that the global market for high-performance rare earth permanent magnet materials is in strong demand, driven by the growth rate of demand for NdFeB permanent magnet materials. It can be seen. my country’s new energy industry is developing rapidly, the industrial intelligent transformation is accelerating, the electronic home appliance industry is huge, and the domestic market demand for high-performance rare earth permanent magnet materials is growing more strongly, which is beneficial to the fourth-generation rare earth iron-nitrogen permanent magnet material industry with better performance develop. However, at this stage, due to limitations in preparation processes and other factors, the industrial development of rare earth iron-nitrogen permanent magnet materials in my country is limited, and neodymium-iron-boron permanent magnet materials are still the market leader.