CO[sub 2] Corrosion of Bare Steel under an Aqueous Boundary Layer with Oxygen
Bibliographic record
Abstract
The effect of dissolved carbon dioxide on steel corrosion in aerated solutions has been variously reported, ranging from "no effect" to "catalytic enhancement of corrosion." A corrosion model was developed, verified with published experimental data, and then used to interpret the role of carbon dioxide in the presence of oxygen. Carbon dioxide has little effect on the corrosion rate when its pressure is less than the oxygen pressure. The model reveals that the effect becomes significant only when the carbon dioxide pressure is substantially higher than the oxygen pressure. The results also show that for a thick boundary layer, carbon dioxide hydration controls the corrosion rate at low oxygen pressures. As oxygen pressure is increased, oxygen dominates corrosion with oxygen diffusion contributing to and then controlling the corrosion rate. For a thin boundary layer, charge transfer of oxygen reduction controls the corrosion rate. © 2002 The Electrochemical Society. All rights reserved.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".