GB/T 39494-2020 《Determination for coating adhesion of rare earth permanent magnetic materials for drive motor of new energy vehicle》 Related products

This standard specifies the method for measuring the bonding force of rare earth permanent magnet materials used in new energy vehicle drive motors, including four kinds of Destructiveness test methods: pull-off method, shear method, cross-cut method and thermal shock method. The standard applies to the determination of the bonding force of single-layer or multi-layer coated platings. Coated platings include Eletroplating, Electrophoresis, lame plating, physical vapor deposition (VD) and chemical plating. Through standardized test methods, it provides a technical basis for the surface preparation quality control of rare earth permanent magnet materials for new energy vehicle drive motors, ensuring the Reliability of products in high-performance applications.