Oxidation Reactivity of Heat-Resistant Ni-Cr Alloys Exposed in Wet Air at 900 °C
Bibliographic record
Abstract
Abstract The relative wet oxidation reactivity of two centrifugally-cast, heat-resistant Ni-Cr alloys is presented for an isothermal (900 °C) in wet (10% H2O) air up to 500 h. Both 48Ni-45Cr and 41Ni-32Cr exhibit a similar weight loss after 500 h, which suggests a similar relative reactivity. However, there are three aspects that suggest there is a difference in the relative wet oxidation reactivity. These include: (i) a different kinetic rate law (cubic for 41Ni-35Cr and parabolic for 48Ni-45Cr), (ii) a different susceptibility to internal oxidation (deeper in 48Ni-45Cr) and (iii) a difference in the degree of oxide spallation observed upon cooling to room temperature (significantly higher for 41Ni-35Cr). These relative differences are discussed by establishing links to the oxide scale morphology for (i) above and the underlying microstructure for (ii) and (iii) above.
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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) | 0.000 | 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) | 0.001 | 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".