Everlube coated neodymium magnet rare earth magnet

Product Description

Application of Everlube coating

Everlube coated neodymium magnets are ideally suited for  applications in the automotive sector, especially for electric vehicles , aerospace, and electronics.

EVERLUBE coating has excellent salt spray resistance and excellent adhesion, The Everlube coating was originally developed as a brand of dry film lubricant products specifically designed to enhance and improve the performance of critical components and meet a wide variety of industry, defence, and customer specifications for critical components.  Manufactured by Curtiss Wright, the coatings are widely used by companies including Boeing, Airbus and NASA.

What is Everlube coating ?

As a thermosetting coating, Everlube coating is mainly composed of Polytetrafluoroethylene (PTFE), Molybdenum Disulfide (MoS2), and phenolic resin adhesive.

Some permanent magnets, including neodymium, react negatively to exposure to water or humid conditions.   In neodymium magnets, the neodymium-rich layers at the grain boundaries react to form neodymium hydroxide. The effect of this conversion from Nd to Nd(OH)3 is a large volume increase along the grain boundaries, leading to cracking and degradation of magnet properties.   The speed of this is enhanced when salt is present.   The Everlube coating prevents such degradation.

Typical Performance of Everlube Coated Magnet

1. Appearance Golden-yellow.
2. Coating thickness: 10-25 μm.
3. Hardness: 4H.
4. Operating temperature range: -70 to 200 degrees Celsius.
5. Salt spray testing: longer than 120 hrs.
6. PCT/HAST testing: 72 hrs.
7. Climate testing: 500 hrs.

Advantages of Everlube Coating

• High load and low friction coefficient.
• Superior high-temperature resistance.
• Excellent chemical corrosion and rust resistance, thus magnets with Everlube coating show excellent stability in PCT/HAST, salt spray and climate testing. Everlube coated magnets even able to work steadily under some solvents.