High-performance magnets increase the endurance of drones by 50%
2025-10-21
As the low-altitude economy becomes a new growth pole, the performance requirements for core materials in equipment such as unmanned aerial vehicles and flying cars continue to upgrade. In the third quarter of 2025, a new power system based on Baotou rare earth super-magnetostrictive materials and high-grade neodymium iron boron was launched, which extended the flight time of industrial drones from 4 hours to 6 hours and increased their load-carrying capacity by 30%, triggering technological innovation in the industry.
The endurance and power output of unmanned aerial vehicles are highly dependent on the performance of the motor, and the magnet is the core component that determines the efficiency of the motor. Most traditional unmanned aerial vehicles (UAVs) use ferrite magnets, which have problems such as large size and rapid magnetic performance attenuation, making it difficult to meet the requirements of long-endurance operations. The latest 52SH grade neodymium iron boron magnet developed by Baotou Rare Earth Research Institute, with its temperature resistance of 180℃ and ultra-high coercive force, can maintain a stable magnetic field in the high-speed rotating motor of unmanned aerial vehicles. Combined with the advantage of lightweight, the energy conversion efficiency of the motor has been increased from 85% to 94%.
What is more worthy of attention is the large-scale application of rare earth supermagnetostrictive materials. This magnet, known as a "supermaterial", can undergo tremendous expansion and contraction deformation under the influence of a magnetic field, with an energy density far exceeding that of piezoelectric ceramics. The response speed of unmanned aerial vehicle servos made from it is increased by two times, and the control accuracy reaches the millimeter level. The first domestic demonstration line for the batch production of rare earth supermagnetostrictive materials built in Baotou adopts the full melting process to achieve "one furnace, multiple strands" production, solving the efficiency bottleneck of "single strand growth" in the traditional zone melting method. The consistency of material performance has reached the international advanced level.
The upgrade of magnetic materials has increased the daily operation area of our agricultural drones from 300 mu to 450 mu. The person in charge of a certain agricultural technology enterprise said. Apart from the civilian field, the UH grade neodymium iron boron with high temperature resistance and vibration resistance has been applied to military reconnaissance unmanned aerial vehicles, which can still maintain stable operation in complex electromagnetic environments. Industry predictions suggest that the market size of magnetic materials in the low-altitude economy sector will exceed 20 billion yuan by 2026, among which high-performance neodymium iron boron will account for 70%.
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