Corrosion inhibition of a Mannich base on N80 steel in a 20% HCl solution
Bibliographic record
Abstract
As oilfield exploitation advances to greater depths, existing corrosion inhibitors show limited effectiveness at high temperatures. In this study, a novel Mannich base corrosion inhibitor was synthesised, and its performance in inhibiting corrosion of N80 steel in a 20% HCl solution was evaluated using weight loss tests, electrochemical measurements, scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS). The results demonstrated that the corrosion inhibition rate increased with inhibitor concentration and decreased as temperature rose. At a concentration of approximately 1.0% in the 20% HCl solution, the Mannich base achieved a maximum inhibition efficiency of 99.9% at 60°C and 98% at 100°C. Electrochemical tests revealed that the synthesised Mannich base exhibited a mixed control inhibition mechanism. SEM and EDS analyses confirmed that the corrosion inhibitor formed a dense adsorption layer on the surface of N80 steel. The inhibitor's behaviour followed the Langmuir adsorption isotherm, suggesting the coexistence of both physical and chemical adsorption mechanisms.
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.
How this classification was reachedexpand
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 | 0.001 | 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 teacher head, 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".