Tribology improvement of graphene/polyamide-imide composite coating under current-carrying friction
Why this work is in the frame
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Bibliographic record
Abstract
Graphene is a promising nano-additive in polymer-based coatings to improve their tribology performance under current-carrying conditions due to its unique electrical, thermal and mechanical properties. Here, the current-carrying friction behavior of polyamide-imide (PAI) matrix composite coating incorporated with graphene prepared by high-temperature solicitation is studied using a homemade ball-on-disc tribometer. It is revealed that both coefficient of friction and wear rate of graphene/PAI composite coating are lower than those of pure PAI coating. The reduction in wear rate of PAI coating by the addition of graphene is increased by >7 times when the current intensity rises from 0 to 4.5 A, indicating better tribology enhancement of graphene under current-carrying conditions than under dry conditions. Post-test surface analyses demonstrate that the tribology enhancement mechanism mainly arises from the quick in-situ formation of graphene-rich transfer film promoted by current heat and the highly suppressed arc erosion on worn surface. This work provides a novel method to broaden wear resistant polymer-based coatings in the field of current-carrying lubrication application.
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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 | 0.001 |
| 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