Title: Method for improving corrosion resistance of aluminium plated surface
Application Number: 97110250 Application Date: 1997.03.06
Publication Number: 1168419 Publication Date: 1997.12.24
Approval Pub. Date: 2001.06.06 Granted Pub. Date: 2001.06.06
International Classifi-cation: C22F1/04;C23F17/00;H01F1/057;H01F7/00
Applicant(s) Name: Vacuumschmelze GmbH Address:
Inventor(s) Name: Lothar Zapf
Attorney & Agent: WANG JINGCHAO
Abstract:
    NdFeB magnets are very sensitive to corrosion and are provided, among other things, with a layer of aluminum in order to improve their resistance to corrosion. According to the invention, the magnet with the aluminum coating is subjected to a heat treatment at a temperature lower than the melting temperature of the aluminum, which heat treatment improves the resistance to corrosion.
Time: 4