Investigation on Corrosion Behavior of the Al-B<sub>4</sub>C Metal Matrix Composite in a Mildly Oxidizing Aqueous Environment
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Bibliographic record
Abstract
The corrosion behavior of Al-B4C (aluminum-boron carbide) metal matrix composites in a 0.5 M potassium sulfate (K2SO4) solution was investigated using electrochemical impedance spectroscopy and potentiodynamic polarization methods. Optical and scanning electron microscopes as well as profilometry were used to study the surface morphology of the material before and after corrosion. Moreover, infrared reflectionabsorption spectroscopy (IRRAS) and x-ray photoelectron spectroscopy (XPS) were used to identify the corrosion products. It was observed that SO4 2- species did not induce pitting of the AA1100 (UNS A91100)-16 vol% B4C. In contrast, it was found that the Al-B4C composite was highly susceptible to pitting attacks by chloride ions, especially at the Al/B4C interfaces. The B4C particles showed a cathodic character with respect to the peripheral matrix, and both the IRRAS and XPS results showed that bayerite (Al[OH]3) was the main corrosion product. © 2011, NACE International.
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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 | 0.000 | 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 it