System for controlling corrosion in an environment in which thin layers of low-pH corrosive fluids are formed
US5290407A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1988 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Dec 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23F2201/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for preventing corrosion of a metallic surface in an environment in which a corrosive condensate with a pH of less than about 3 tends to form on the surface exposed to the environment. The system includes an absorbent lining formed from a concrete material that has a chemical resistance to a low pH and that increases the pH of the environment at the underlying metallic surface. The system further includes a counterelectrode and an electrochemical potential control means connected in electrical circuit with the metallic surface. An electrical potential is maintained upon the metallic surface sufficient to effect cathodic protection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.