Why does neodymium make strong magnets?

Why does neodymium make strong magnets?

Neodymium magnets are so strong because of their high resistance to demagnetisation (coercivity) and their high levels of magnetic saturation allowing them to generate large magnetic fields. A magnet’s strength is represented by its maximum energy product value (BHmax) which is measured in Mega Gauss Oersteds (MGOe).

What is special about Neodymium magnets?

Neodymium magnets are the strongest permanent magnets commercially available, anywhere in the world. They provide unparalleled levels of magnetism and resistance to demagnetisation when compared to ferrite, alnico and even samarium-cobalt magnets.

Are Neodymium magnets strong?

Neodymium magnets (also known as “NdFeB”, “Neo” or “NIB” magnets), are strong permanent magnets made from an alloy of neodymium, iron & boron. Part of the Rare-Earth magnet family, they have the highest magnetic properties of all permanent magnets.

Are N52 magnets the strongest?

NIB magnets come in different grades, which correspond to the strength of their magnetic fields, ranging from N35 (weakest and least expensive) to N52 (strongest, most expensive and more brittle). An N52 magnet is approximately 50% stronger than an N35 magnet (52/35 = 1.49).

Why are Supermagnets so powerful?

Large neodymium magnets have a tendency to draw to each other or ferrous objects so intensely that they shatter, sending shards of magnetic shrapnel everywhere.

Why is neodymium more magnetic than iron?

The neodymium atom can have a large magnetic dipole moment because it has 4 unpaired electrons in its electron structure as opposed to (on average) 3 in iron. In a magnet it is the unpaired electrons, aligned so that their spin is in the same direction, which generate the magnetic field.

How many Tesla does a neodymium magnet?

As previously mentioned, neodymium magnets can create magnetic fields with up to 1.4 teslas. In comparison, ceramic magnets generally produce magnetic fields with just 0.5 to 1 teslas. Not only are neodymium magnets stronger, magnetically, than ceramic magnets; they are harder as well.

Which is stronger N42 or N52 magnet?

Generally speaking, neodymium magnets range from N35 to N52 in grade. The higher the grade number, the incrementally stronger the magnet will be. A magnet of grade N42 has a Maximum Energy Product of Gauss 42 MGOe, while an N52, at 52 MGOe would be incrementally stronger.

How much weight can a N52 magnet hold?

This magnet can hold up to 10 lbs under ideal conditions, and their grade N52 neodymium material makes them the strongest magnets of their size commercially available.

Why is neodymium the strongest permanent magnet in the world?

The pull strength a neodymium magnet can achieve is the strongest of the permanent magnets you can buy. It is so strong because it has a very high state of saturation, magnetization. So, the magnetic energy the combination of neodymium, iron, and boron can store, makes the alloy very magnetic.

Why are neodymium magnets often coated with rust?

Neodymium magnets are often coated because of the material is not resistance to corrosion. If iron is exposed to moist air, it reacts with the oxygen to form rust. Therefore, you should worry about where you use neodymium magnets, but our biggest concern is your safety.

How are neodymium magnets processed for wind power?

Neodymium magnets can be processed by Nano (Royce3010) chelate thin film coating, which can be used 20 to 30 years in the Marine climate condition, can be widely used in magnetic modules for wind power.

How is neodymium used in the real world?

It is also used in loudspeakers, MRI scanners, jewelry manufacturing and also as magnetic therapy. Besides all that, neodymium is used in coloring glasses, by being able to absorb the yellow sodium glare of the flame. That is the kind of glass that is used to protect the eyes of welders.