Cathodic protection methods and apparatus
US6224743A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Jun 16, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F2201/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Apparatus, compositions and methods provide cathodic protection to a structure by placing an anode layer (10) directly between the structure (22) and its underlying foundation (30). Structures contemplated to be protected in this manner include especially very large structures such as above ground storage tanks. In one aspect of preferred embodiments, the anode layer (10) comprises sheets of at least 85% aluminum with other alloying elements such as magnesium (0.05 to 6%), zinc (0.1 to 8%), indium (0.005 to 0.03%) and tin (0.05 to 0.2%) added for the purposes of optimizing current yield, polarization and ease of manufacturing the sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.