I believe everyone knows that in our daily life, magnets are a very common thing, and neodymium iron boron strong magnets are a commonly used type of magnet. As early as several thousand years ago, the working people of our country made the compass, one of the the Four Great Inventions, according to the characteristics of magnets. Until today, magnets are also a very useful thing. From various special electronic devices to everyday teaching aids and toys, the figure of magnets can often be seen. Therefore, let's take you to a detailed understanding of the common knowledge of neodymium iron boron strong magnets:

We know that the main component of magnets is ferric oxide, and neodymium iron boron strong magnets are no exception. However, due to the inherent properties of ferric oxide, its attraction to iron objects is not too strong, and its magnetism will gradually weaken over time. In this case, how can we make a magnet with stronger suction that should not decay? Under such circumstances, neodymium iron boron strong magnets emerged.

This type of magnet with a shiny and corrosion-resistant surface is called a neodymium iron boron strong magnet, and its chemical formula is Nd2Fe14B. The most commonly used neodymium iron boron strong magnet is made by high-temperature sintering of three elements: neodymium, iron, and boron, and is the strongest artificial magnet to date. If the core element of traditional ferric oxide is iron, then the reason why neodymium iron boron strong magnets have such strong magnetism is due to the effect of neodymium.

Neodymium is the fourth element in the lanthanide family of rare earth elements, and like iron, cobalt, nickel, and previously mentioned gadolinium, it can also be attracted by magnets. In addition, neodymium is one of the more active lanthanide elements, so it is easily oxidized like iron, which is why the surface of neodymium iron boron strong magnets has a coating. If neodymium is used to enhance magnetism, then the role of boron should not be underestimated. This black thing is boron:

In the periodic table, boron is located to the left of carbon, so there has recently been a boron chemistry similar to carbon centered organic chemistry. In neodymium iron boron strong magnets, boron acts as a mediator between neodymium and iron. Boron greatly expands the maximum magnetism that a substance can produce while ensuring its molecular structure stability, making the magnetic properties of the entire magnet extremely high, even allowing it to absorb objects equivalent to 640 times its own weight.