0769-23388351
Toggle Navigation
Neodymium iron boron magnets (commonly referred to as neodymium magnets) are a type of permanent magnet material with extremely strong magnetic force. They are commonly used in a variety of applications, including electric motors, audio systems, magnetic suction cups, and mechanical equipment. However, neodymium magnets have one drawback: they are prone to rusting.
Why do neodymium magnets rust?
This is because the main components of neodymium magnets are neodymium (Nd), iron (Fe), and boron (B). The iron component reacts very easily with moisture and oxygen in the air to form rust, which is the reddish-brown rust (iron oxide) that we see.
Damaged and rusted neodymium ring magnets
Why don't the neodymium magnets we commonly see rust?
To prevent rusting, nearly all finished neodymium magnets undergo surface coating protection before leaving the factory, such as common nickel-copper-nickel, zinc, or epoxy coatings. These coatings isolate the neodymium magnets from external moisture and oxygen, preventing the internal iron and neodymium from undergoing oxidation reactions, thereby preventing rusting.
Finally, let's wrap up this article with a summary. Neodymium magnets (neodymium iron boron) are highly prone to rusting because they contain iron and reactive neodymium. The neodymium magnets we encounter in daily life do not “rust” because their surfaces are coated with materials such as nickel, zinc, or epoxy resin. Once the coating is damaged and the inner material is exposed, the magnet will begin to rust, powderize, and crack, resulting in a significant weakening of its magnetic strength.
Related articles on magnet rusting;
Neodymium round magnets with a diameter of 5mm and a thickness of 4mm are more commonly used. If you feel that the magnetic force is not enough, the performance level can be appropriately improved. Welcome to consult the price!...
Our company is a permanent magnet supplier from China. We are good at processing micro-precision magnets, high-performance magnets, special-shaped magnets, and multi-pole ring magnets. The quality is guaranteed and the price is not expensive. We look forward to customer consultation from all over the world....
The sample is an N52 high-performance ultra small hole radially sintered neodymium rotor magnet, with specifications of 2mm outer diameter, 0.9mm bore, and 4.5mm height....
This is a square neodymium magnet for earphones, the length and width are 5mm, the thickness is 2mm, the thickness is magnetized, the surface is galvanized, 1mm or other thickness can also be selected, non-high temperature grade, the maximum working temperature is less than 80 ℃...
The sample is a high-performance ferrite rotor magnet with a radial 3-pair pole configuration (6 poles), measuring 20mm in outer diameter, center bore diameter of 8mm, and height of 27mm. surface magnetic flux density reaches approximately 1800 Gauss....
This is a small-sized short bar shaped neodymium iron boron strong magnet with a specification of 1.5 × 1.5 × 10mm. It is made of N42 performance grade neodymium iron boron material and magnetized along the length direction (10 mm direction)....
This is a rare earth NdFeB strong magnet with a length of 30mm, a width of 20mm and a thickness of 10mm. Surface treatment is nickel-copper-nickel, and the thickness is 10mm. Magnetization direction is length direction....
This product is a small rare earth NdFeB magnet ring, with gold plated surface, N52 grade, the magnetization method is axial, the size is 5mm outer diameter, 2mm inner hole, 2mm height, and the tolerance can be ±0.02mm. Welcome to consult us for the price....