Predicting Carbon Dioxide Corrosion of Bare Steel Under an Aqueous Boundary Layer with Oxygen and Cathodic Protection
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Bibliographic record
Abstract
Carbon dioxide (CO2) corrosion of bare steel under an aerated aqueous boundary layer with imposed cathodic protection (CP) was modeled. The results show that an imposed CP current decreases the corrosion rate because it changes the steel potential to a more negative value while consuming the oxygen diffusing to the pipe surface as well as the hydrogen ions that dissociate from carbonic acid (H2CO3). This decrease of corrosion rate is greatest near the free corrosion potential and becomes less as the potential is shifted to a more negative value. This change of corrosion rate with the steel potential follows the Tafel relationship between them. At very negative potentials, the reduction of hydrogen ions and H2CO3 to hydrogen is increased and may lead to hydrogen-induced cracking.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it