Impact of surface post-treatments on corrosion resistance in heat-treated laser-powder bed fused Nickel Aluminum Bronze
Why this work is in the frame
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Bibliographic record
Abstract
This study investigates the effects of surface finishing on the passive behavior and corrosion response of C63020- Nickel Aluminum Bronze (NAB) alloy produced via laser-powder bed fusion (L-PBF) additive manufacturing , followed by annealing. To evaluate these effects, annealed L-PBF NAB in its as-printed surface finish was compared to samples subjected to two different surface treatments: one ground and another ground followed by polishing. Microstructural analysis of the samples revealed primarily globular and elongated κ III phase precipitates distributed within the α-Cu matrix. Surface roughness measurements ranked the samples from highest to lowest as: as-printed NAB, ground NAB, and polished NAB. The results revealed that rougher surfaces enhanced electrochemical performance , as NAB passivity is a time-dependent process that benefits from an increased effective surface area. As a result, the ground-only samples demonstrated the highest corrosion resistance among the evaluated conditions.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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