Composite sacrificial anodes
US7374643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | May 20, 2008 |
| Priority date | — |
| Expiry date | May 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53204
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.