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US 2014/0139304 A1Published application
Self-Healing Corrosion Protection Coatings for Nd-Fe-B Magnets
AssigneeGM Global Technology Operations LLC
InventorYar-Ming WANG
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Abstract
A neodymium magnet (Nd—Fe—B) is protected by a self-healing, corrosion-resistant coating of (a) a sacrificial metal layer; (b) optionally, a metal pretreatment layer on the sacrificial metal layer; and (c) an electrocoat coating layer.
Claims14
A method of protecting a neodymium magnet, comprising
- (a) applying a sacrificial metal layer;
- (b) optionally, applying a metal pretreatment layer onto the sacrificial metal layer;
- and
- (c) applying an electrocoat coating layer.
1 more element
A neodymium magnet, comprising a coating comprising:
- (a) a sacrificial metal layer;
- (b) optionally, a metal pretreatment layer on the sacrificial metal layer;
- and
- (c) an electrocoat coating layer.
1 more element
Dependencies are inferred from the claim text.