Development of Novel ‘Duplex NiCr-Coated’ Nanostructured HVOF WC-17Ni(80/20)Cr Coatings for Severe Wear Applications
Bibliographic record
Abstract
Thermally sprayed coatings have long been used to develop engineered surfaces for protection from severe degradation due to abrasive/erosive wear. High Velocity Oxy-Fuel (HVOF) thermal sprayed cermet composite coatings based on WC-Co systems offer better wear resistance and greater application flexibility compared with the traditional surface treatment techniques such as hardfacing. Recently, the development of nanostructured surfaces based on HVOF deposition of nano-grain WC reinforced in a variety of alloy matrix based cermet systems have gained research focus thanks to their initial performance results, including high hardness and wear properties without concomitant loss of ductility or fracture toughness in the sprayed coatings. In this research, the novel design and manufacturing of the ‘duplex Co-coated’ nanostructured WC-17Ni(80/20)Cr cermet powder is developed. The spraying of the feedstock is carried out using a diamond jet DJ2600 HVOF spray gun. In this study the mechanical properties of the novel coating are investigated and compared with the industry-standard microstructured WC-10Ni-5Cr coating.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), 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".