Neodymium magnets, also known as Rare Earth magnets, are probably one of the most used type of magnets. Rare Earth magnets are made from alloy of neodymium, iron, and boron. This 3 alloys together abbreviated as NIB.

Neodymium magnets were invented by Sagawa Masato of Sumitomo Special Metals in 1982, Sumitomo Special Metals successfully developed the powder metallurgy process, and General Motors successfully developed the, melt spinning process. Both companies can prepare the Neodymium magnets.

Neodymium magnets have become essential in various applications due to their exceptional strength and efficiency. Neodymium magnets can be found in our day-to-day lives.

Features:

• High Magnetic Strength: Neodymium magnets are the strongest magnets when compared to other magnets available commercially. Neodymium magnets have a very strong magnetic field strength which exceeds that of other magnets significantly. Even the smallest Neodymium magnets have a great lifting capacity.
• Resistance to Demagnetization: Neodymium magnets do not demagnetize easily over time. This makes them great to use for a long period without the magnets losing their magnetic properties.
• Temperature Sensitivity: Neodymium magnets being very powerful does have a negative effect when it comes to heat, standard grade Neodymium magnets have a maximum operating temperature of 80 degrees Celsius, before losing irrecoverable magnetic performance.
• Corrosion Susceptibility: Neodymium magnets are prone to oxidation and corrosion. They are often coated with protective layers of nickel, zinc, or epoxy to alleviate this issue.

Applications:

Neodymium magnets are the most widely used type of magnets in different industries.

• Electronics: Used in hard drives, speakers, headphones, microphones, and mobile phone components.
• Motors and Generators: Essential in high-performance motors, generators, and actuators.
• Medical Devices: Used in MRI machines, magnetic therapy, and surgical tools.
• Renewable Energy: Fundamental to wind turbine generators and electric vehicle motors, contributing to more efficient energy transformation.
• Industrial Applications: Used in magnetic separation processes, lifting machinery, and holding applications.

Grades:

Neodymium magnets are available in various grades, the different grades have different magnetic strengths. The most common grades are N35, N38, N42, N52, etc. The number represents the magnetic strengths of the magnets, higher numbers indicate stronger magnets. Magnets are measured in Gauss with a Gauss meter.

Safety Considerations:

Due to how strong Neodymium magnets are they pose a safety risk; please see on our website how to safely separate magnets for more information.

• Pinching Hazards: Neodymium magnets are strong magnets that pose a threat of pinching finders or hands when snapping together.
• Electronic Interference: Powerful magnetic fields can disrupt electronic devices and magnetic storage media such as hard drives. It is also a health hazard for people with a pacemaker.
• Health Risks: Consumption of neodymium magnets can be dangerous, especially if multiple magnets are swallowed, as they can attract each other through the walls of the intestines, causing serious injuries.