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See Chinese contents: GB/T 39494-2020 GB/T 39494-2020: Determination for Coating Adhesion of Rare Earth Permanent Magnetic Materials for Drive Motor of New Energy Vehicle
This Standard specifies the determination method for coating adhesion of rare earth permanent magnetic materials for the drive motors of new energy vehicles. There are four methods in total, including the pull method, shear method, cross-cut method and thermal shock method, all of which are destructive test methods.
