black epoxy magnet

Multi-pole bonded NdFeB magnets are used in magnetic encoders, brushless motors, sensors and more.

Unlike gold, zinc and nickel, an epoxy magnet coating acts as an excellent barrier to salt, ambient air, water or moisture. But it's slightly more expensive than the first three alternatives. Although it is easy to scratch, with a thickness of 15-30 um, it has good adhesion to steel with magnetic glue. Epoxy coatings are mainly used in the Marine, motor, sensor, automotive and consumer goods industries.

Bonded neodymium magnets are a flexible alternative to sintered neodymium. These magnets are made by melting neodymium powder and mixing it with a polymer, which can be moulded by pressing or extruding. Although weaker than sintered neodymium, they offer greater flexibility in shape and are lighter than samarium cobalt. They are suitable for applications requiring smaller magnets or radial rings in industries such as automotive, household, power tools and electronics.