The main component of magnets is iron tetroxide, and powerful NdFeB magnets are no exception. However, due to the properties of ferroferric oxide itself, its attraction to iron objects is not too strong, and its magnetism will slowly weaken over time. In this case, how can we make a magnet with stronger suction and less resistance to decay? Under this premise, powerful NdFeB magnets came into being.
This kind of shiny magnet with anti-corrosion treatment on the surface is a powerful neodymium iron boron magnet. Its chemical formula is Nd2Fe14B. The most commonly used NdFeB powerful magnet is made of three elements: neodymium, iron and boron, which are sintered at high temperature. It is the strongest artificial magnet to date. If the core element of traditional Fe3O4 is iron, then the reason why NdFeB magnets have such strong magnetism is the role of the Nd element.
Neodymium is the fourth element in the lanthanide family of rare earth elements. Like iron, cobalt, nickel and the aforementioned gadolinium, it itself can be attracted to magnets. In addition, neodymium is the more active lanthanide element, so it is easily oxidized like iron. This is why the surface of NdFeB magnet is coated. If neodymium is used to improve magnetism, then the role of boron cannot be underestimated.
Boron is located to the left of carbon in the periodic table, so boron chemistry, which is similar to carbon-centered organic chemistry, has recently emerged. In NdFeB magnet, boron is equivalent to the mediator of neodymium and iron. Boron greatly expands the maximum magnetism that a substance can produce while ensuring the stability of its molecular structure, making the entire magnet extremely high in magnetic performance, even allowing it to pick up objects 640 times its own weight.
The above is the common knowledge of NdFeB magnet that we have introduced to you in detail. From the above introduction, we can easily see that NdFeB magnets are a specially treated magnet type and are currently widely used in the field of enhanced nuclear magnetic resonance imaging. , of course, is also widely used in many situations in life.
