1. Different applications
1. Rare earth permanent magnets
Due to the special atomic structure, the members of the rare earth family are very lively, and all of them have extraordinary skills and boundless magic. When they are combined with other elements, they can form new materials with various categories, ever-changing functions and different uses, and their performance is doubled, which is called the contemporary "industrial monosodium glutamate".
2. Magnets
When talking about the magnetic sources, electromagnetic induction and magnetic devices of magnetic materials, we have already mentioned the practical applications of some magnetic materials. In fact, magnetic materials have been widely used in all aspects of traditional industry.
for example, without magnetic materials, electrification would be impossible, because generators are needed for power generation, transformers for power transmission, motors for electric machinery, telephones, radios and televisions, and speakers. Magnetic steel coil structure is used in many instruments.
2. Different functions
1. The most important function of rare earth permanent magnet
is permanent magnet. The so-called permanent magnet can not keep its original magnetic state forever, but its magnetism is relatively stable and its decay period is relatively long.
2. Magnets
Magnets and a screwdriver are the materials you need. Rub the metal part of the screwdriver with magnets, and rub them repeatedly from one end to the other, and you can make a magnetic screwdriver.
3. Different properties
1. Rare earth permanent magnet
It is one of the alloys with the best high temperature performance at present, and its endurance strength can be increased by 1-2 times compared with that of ordinary aluminum alloy; After adding rare earth into steel, the transverse impact toughness and corrosion resistance of the thin material are improved by more than 5% and 6%.
2. The paramagnetism of a magnet
refers to the magnetic state of a material. Some materials can be influenced by the external magnetic field, resulting in the characteristic of pointing to the same and opposite magnetization vectors. Such a substance has a positive magnetic susceptibility. The phenomenon opposite to paramagnetism is called diamagnetism.
Baidu Encyclopedia-Rare Earth Permanent Magnet
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