System and method for testing repassivation kinetics
US11275016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2018 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Nov 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/416
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electrochemical system for measuring the repassivation kinetics of a metallic material under sour oil field conditions comprises a housing made of the metallic material surrounding an internal space; insulating covers positioned on the housing, an electrolyte enclosed within the internal space of the housing and the insulating covers, a scratch tool including a second housing made of an insulting material that one end positioned in the electrolyte, a sample holder for holding a sample composed of the metallic material, and a pin tip positioned to scratch off a passivation film from the sample surface, and an electrical power source coupled to the housing and the sample within the scratch tool so as to generate an electric current between the housing and the sample, wherein the sample holder is movable with respect to the pin tip to create a scratch on the sample within the electrolyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.