A neodymium magnet-also known as NdFeB, NIB, or Neo magnet-is a type of permanent magnet composed of an alloy of neodymium, iron, and boron, forming the Nd Fe B tetragonal crystalline structure. These magnets are the most widely used rare-earth magnets due to their exceptional magnetic strength.

Developed independently in 1984 by General Motors and Sumitomo Special Metals, neodymium magnets are the strongest commercially available permanent magnets. They have largely replaced other types of magnets in various applications requiring strong permanent magnets, such as electric motors in cordless tools, hard disk drives, and magnetic fasteners.

NdFeB magnets can be classified into two categories based on the manufacturing process:

• Sintered Magnets: Produced by melting raw materials, casting into molds, pulverizing, and sintering into dense blocks. These magnets are then heat-treated, cut to shape, surface-treated, and magnetized.
• Bonded Magnets: Created by melt-spinning a thin ribbon of the NdFeB alloy, pulverizing it into particles, mixing with a polymer, and molding into magnets.

Applications:

Neodymium magnets are utilized across various sectors:

• Commercial Use: In products like speakers, microphones, and hard disk drives.
• Scientific Use: In devices such as MRI machines and laboratory equipment.
• Engineering: In electric motors, generators, and magnetic separation equipment.
• Arts and Crafts: In applications requiring strong, compact magnets.
• DIY Projects: In various home improvement and creative projects.

Please note that measurements are in millimeters, indicating the small size of these magnets.

What's in the box
10 x Neodymium block magnets