| 摘要 |
The invention relates to composite sacrificial anodes, particularly but not exclusively, based on magnesium, and to methods for their production. The composite sacrificial anode ( 10 ) for immersion in a corrosive environment comprises a plurality of castings ( 12 ) of a sacrificial material each disposed around a corresponding electrical connector for attachment to a structure to be protected, at least a part of the surface of each segment ( 12 ) being protected from corrosion by the environment by being adjacent at least one other segment ( 12 ), wherein the castings are connected together electrically only via their electrical connectors. A method of producing a composite sacrificial anode for immersion in a corrosive environment is also described, the anode ( 10 ) having an electrical connection for attachment to the structure to be protected, which method comprises casting a plurality of segments ( 12 ) of a sacrificial material each in contact with a corresponding electrical connector, each connector being at least partly within its corresponding individual segment ( 12 ), and electrically connecting the segments together only via their electrical connectors.
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