High Temperature Corrosion of 625 Supperalloy under Iron-Zinc-Lead Oxide/Sulfate/Chloride Salt Mixtures
Bibliographic record
Abstract
The corrosion resistance and degradation mechanisms of 625 supperalloy at 800 oC under three molten salt compositions containing PbSO4, PbO, PbCl, ZnO, Fe2O3 and CdO in air atmosphere were studied. The concentrations of Fe2O3 and CdO were varied to evaluate the effect of these compounds on the corrosion reaction. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technique were applied to evaluate the degradation mechanisms and corrosion properties of the alloy. Corrosion products and surface layer of the corroded specimens were studied by SEM/EDX and X-ray map analyses. Electrochemical evaluation confirmed that increasing the concentration of CdO in the molten phase could increase the corrosion rate of the alloy and in this condition the corrosion phenomena occurred under the control of charge transfer effect. The presence of a Cr-depleted layer on the surface of the alloy was the reason for the formation of an internally attacked area at the alloy/oxide interface.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".