Effect of Cathodic Potential on Hydrogen Content in a Pipeline Steel Exposed to NS4 Near-Neutral pH Soil Solution
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The effect of cathodic potential on hydrogen generation and permeation behavior of a X-65 pipeline steel exposed to near-neutral pH NS4 soil environment was studied. The steel-hydrogen interaction was evaluated in terms of the total hydrogen content in the steel and the hydrogen permeation flux through the steel coupon. It was found that hydrogen content in the steel charged in near-neutral pH solution depended significantly on a combined effect of cathodic potential and the formation of calcium carbonate (CaCO3) film on the specimen surface that builds up with increasing charging time. It was confirmed by hydrogen permeation testing that the calcium carbonate film reduces the adsorption of atomic hydrogen to the steel surface. In the solution with diluted Ca2+, CO32−, and HCO3−, the hydrogen content in the steel was less sensitive to cathodic potential, and was lower than that produced in the solution with concentrated Ca2+, CO32−, and HCO3− under the same cathodic condition. The mechanisms and the implication related to the observations were discussed.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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