NdFeB Strong Permanent Magnet Is The Largest Application Of Neodymium Element

The biggest application of neodymium is to manufacture magnets with excellent performance. This kind of magnet is called NdFeB magnet, which is the most powerful permanent magnet discovered so far. Two magnets smaller than chalk can pass through the palm of a human hand and attract each other. Two small magnet bars that are directly attracted together, it is difficult for ordinary women to separate them directly. Because this kind of magnet is too strong, many players specially buy this kind of magnet to do various interesting experiments, such as using two magnets to crush some common daily necessities, tug-of-war with super strong magnets, etc., never tired of it!

 

Of course, such a strong magnet is not just for playing, it has a wide range of applications in reality. This kind of permanent magnet can be used in everything from microphones and earphones to high-speed rail ships. It can be said that the discovery and application of NdFeB permanent magnets has brought us exquisite and convenient modern life. Our computers use hard disks. If the hard disks want to work normally, there must be a motor to drive the platters to rotate at high speed. Such a small motor can drive a large disk to rotate 7200 revolutions per minute, what an amazing ability. In order to obtain this ability, ordinary magnets cannot do it, and NdFeB magnets must be used. Such a high speed is not its limit. Many friends engaged in scientific research have used high-speed centrifuges. Some centrifuges can reach 100,000 revolutions per minute. Such a speed can be directly realized by a motor made of NdFeB magnets.

 

The mobile phones we use all have a vibration function. The motor that performs the vibration function inside the mobile phone must be very small, which requires a very strong magnet. Of course, it is the territory of NdFeB. The motor of the car wiper is also very small, but it has a lot of power. In addition, some high-end mobile phones have stronger and stronger speaker functions and better sound quality, but the speaker is very small. Needless to say, you can guess that it is also the effect of NdFeB magnets! In addition, some custom-made microphones for music stars are very expensive, and a microphone can be worth more than 100,000 to 200,000 yuan. This is not only because of the beautiful shell, but also the excellent sound reception effect. Of course, the NdFeB magnets still play an important role.

 

Our country vigorously develops new energy vehicles, among which electric vehicles are considered to be the best option to replace fuel vehicles. But in order to replace fuel vehicles, the performance of fuel vehicles must be achieved. This requires the motor of the car to be powerful, energy-saving and power-saving, and to have a fast speed. At present, NdFeB magnets are still widely used in the field of high-end electric vehicles, bringing extraordinary performance to electric vehicles. For example, the BYD Han Automobile newly produced by my country's BYD Company can accelerate from 100 kilometers to 100 kilometers in only 3.9 seconds. What's even more frightening is that the Tesla Roadster only needs 1.9 seconds to accelerate from 100 kilometers to 100 kilometers, which is an achievement that is difficult for fuel vehicles to achieve.

 

In addition to new energy vehicles, when it comes to the business card of China's modern industry, everyone must think of high-speed rail! Such a fast speed of high-speed rail is not achieved by internal combustion engines at all, but by electric motors, which bring quiet, high-speed and strong power. In addition to high-speed rail, rail vehicles such as bullet trains and subways are also driven by electric motors, and motors made of NdFeB magnets will occupy a large share in the future. This is not over yet, there is also a trend of using electric motors to drive ships on the sea. All countries in the world are developing all-electric ship systems, changing the power of ships to electric motors, internal combustion engines are only used for power generation, and even internal combustion engines are replaced by nuclear energy, completely developing environmentally friendly electric ships. This requires the power of the motor to be very strong. At present, the power of the motor made of NdFeB magnets has exceeded one million watts, that is, one motor is equivalent to the power of hundreds of living room air conditioners, or the power of ten family cars. Such a strong power will inevitably bring about power changes in the shipping field in the future.

 

In addition to these, NdFeB magnets are widely used in the field of wind power generation, and it is worth looking forward to whether they will be widely used in other power generation fields in the future. The inverter air conditioner installed in our home needs NdFeB magnets, many small appliances need NdFeB magnets, many medical facilities in hospitals need NdFeB magnets, future electric robots also need NdFeB magnets, and aerospace needs NdFeB magnets boron magnet. In 2011, the United States launched the Alpha Magnetic Spectrometer 2 with the last space shuttle to search for antimatter and dark matter. Since the space shuttle is about to be decommissioned and the post-maintenance of the magnetic spectrometer is difficult, the international cooperative R&D team decided to abandon the superconducting magnets cooled with liquid helium and replace them with NdFeB permanent magnets produced in China. The magnet has an inner diameter of 1.2 meters, a weight of 2.6 tons, and a central magnetic field strength of 1370 Gauss. Relatively speaking, the magnetic field strength on the earth's surface is about 0.5-0.6 Gauss. When it was launched that year, the domestic media reported a lot, which triggered a wave of pride among the Chinese people! Nine years later, this magnetic spectrometer is still working on the International Space Station.

 

For such a strong magnet, the raw materials mainly come from China, and the production is mainly carried out in China. In order to obtain raw materials more conveniently, large companies in Japan, Europe and the United States have set up joint venture factories in China to provide the world with a steady stream of powerful and widely used magnets. NdFeB magnets. With the vigorous development of this field, my country's new energy industry has also received important support, so there is no need to worry about other countries getting stuck.