Unraveling the corrosion protection mechanisms of sustainable inhibitors in epoxy coatings: Bridging solution-phase behavior and coating performance
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 corrosion inhibition behaviours of three eco-friendly inhibitors under static and dynamic conditions were investigated to establish a correlation between their performance in aqueous solution and their effectiveness in coating applications. Calcium borosilicate (CBS), zinc calcium strontium aluminum orthophosphate silicate hydrate (ZPS), and strontium phosphosilicate (SPS) pigments were characterized as mixed-type inhibitors, predominantly functioning through physical adsorption mechanisms. Assessment of their performance was conducted using electrochemical impedance spectroscopy, potentiodynamic polarization, and scanning electron microscopy, combined with energy dispersive spectroscopy analysis. Electrochemical measurements revealed that SPS and ZPS offered superior inhibition performance compared to CBS, supported by surface analysis. It was shown that CBS was ineffective in forming a protective layer on mild steel in NaCl solution, whereas ZPS and SPS developed protective films with notable anti-corrosion properties, achieving inhibition efficiencies of approximately 55% and 75%, respectively. The superior ZPS performance was attributed to the formation of a thin zinc- and phosphorous-rich oxide layer, although this layer exhibits instability under hydrodynamic flow conditions. In contrast, SPS forms a compact and robust strontium, phosphorus, and silicon-rich oxide film, maintaining stability in static and dynamic environments. In inhibitor-embedded epoxy coatings, CBS slightly improved barrier properties but demonstrated limited corrosion inhibition under dynamic conditions due to the instability of its protective layer. Conversely, ZPS and SPS significantly mitigated corrosion-induced delamination of the coating in stagnant conditions, with the SPS-pigmented coating demonstrating superior performance under dynamic conditions. Additionally, no sign of initiation of localized undercoating corrosion was observed in the SPS-pigmented coatings.
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 | 0.002 | 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 | 0.001 |
| 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