COMPOSITE SACRIFICIAL ANODES

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. La invencion se refiere a anodos sacrificatorios compuestos, particularmente pero no exclusivamente, basados en magnesio, y a metodos para su produccion. El anodo sacrificatorio compuesto (10) para inmersion en un ambiente corrosivo comprende una pluralidad de moldeos (12) de un material sacrificatorio, cada uno colocado alrededor de un conector electrico correspondiente para union a una a una estructura a proteger, al menos una parte de la superficie de cada segmento (12) protegiendose de la corrosion por el ambiente al encontrase adyacente a al menos a otro segmento (12), en donde los moldeos se conectan juntos electricamente solo por medio de sus conectores electricos. Tambien se describe un metodo para producir un anodo sacrificatorio compuesto para inmersion en un ambiente corrosivo, el anodo (10) teniendo una conexion electrica para union a la estructura a proteger, cuyo metodo comprende fundir una pluralidad de segmentos (12) de un material sacrificatorio cada uno en contacto con un conector electrico correspondiente, cada conector encontrandose al menos en parte de su segmento individual correspondiente (12), y conectando electricamente los segmentos juntos solo por medio de sus conectores electricos.