Abstract
Electrochemical potentiokinetic reactivation (EPR) tests are used to evaluate the degree of sensitization (DOS) of Alloy 182 weld. The validity of EPR test to detect DOS of nickel based alloys strongly depends on the electrolyte composition employed. In this investigation, the effects of electrolytes and their concentrations on the reactivation behaviors of Alloy 182 weld were investigated by conducting single-loop EPR (SL-EPR) tests. The experimental results showed that the anodic reactivation peak consisted of the contributions from grain boundaries corrosion, pitting corrosion and matrix dissolution, depending on the value of DOS of Alloy 182 weld. With proper adjustment of constituents (ex: CH 3CSNH 2 or NH 2CSNH 2) and their concentrations in 0.05 M H 2SO 4 solution, the contribution from grain boundary corrosion can be distinguished from the matrix and localized corrosion for the sensitized Alloy 182 weld.
| Original language | English |
|---|---|
| Title of host publication | EUROCORR 2004 - European Corrosion Conference |
| Subtitle of host publication | Long Term Prediction and Modelling of Corrosion |
| Publication status | Published - 2004 |
| Event | European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 - Nice, France Duration: 2004 Sept 12 → 2004 Sept 16 |
Other
| Other | European Corrosion Conference: Long Term Prediction and Modelling of Corrosion, EUROCORR 2004 |
|---|---|
| Country/Territory | France |
| City | Nice |
| Period | 04-09-12 → 04-09-16 |
All Science Journal Classification (ASJC) codes
- Surfaces, Coatings and Films