The biggest application of neodymium is to make magnets with excellent performance. This magnet is called neodymium iron boron magnet. It is the strongest permanent magnet found so far. This kind of magnet is particularly strong in magnetism. Two magnets smaller than chalk can pass through human hands and attract each other. It is difficult for women to separate the two small magnet rods directly. Because this magnet is too strong, many players buy this magnet to do various interesting experiments, such as breaking some common daily necessities with two magnets, tug of war with super magnets, and so on!
Of course, such a strong magnet can not only be used for playing, it is widely used in reality. From microphone earphones to high-speed rail ships, this kind of permanent magnet can be used. It can be said that the discovery and application of NdFeB permanent magnets have brought us a sophisticated and convenient modern life.
Our computer needs a hard disk. If the hard disk wants to work properly, a motor must drive the disk to rotate at a high speed. Such a small motor can rotate 7200 revolutions per minute with a large disk, which is amazing. To obtain this ability, ordinary magnets can not do it, and NdFeB magnets must be used. This high speed is not its limit. Many friends engaged in scientific research use centrifuges with high rotating speed. Some centrifuges can rotate at 100000 revolutions per minute. At this speed, motors made of NdFeB magnets can be directly used.
All the mobile phones we use have the vibration function. The motor that plays the vibration function in the mobile phone with an inch of land must be very small, which requires a very strong magnet, which is of course the territory of NdFeB. The motor of the automobile wiper is also very small, but it has great strength. In addition, some high-end mobile phones have more and more powerful external amplifier functions and better sound quality, while the external speakers are very small. Needless to say, it is also the effect of NdFeB magnets! In addition, the microphones customized by some music stars are very expensive, and one microphone can be worth more than one hundred and two hundred thousand. However, the reason is not only that the shell is beautiful, but also that the radio effect is very good. Of course, neodymium iron boron magnets still play an important role.
