Ultrasonic bonding with Cu thick wires on die-top Cu foils sintered cladded on Ag-Cu nanotwinned films coated SiC chips for power modules
Bibliographic record
Abstract
Through adequate sputtering process, Ag-8.2 Cu alloy nanotwins with very high density of (111)-orientation of 98.1% were sputtered on Ti-precoated SiC chips.The nanotwin enhanced Ag sintered cladding of Cu foils with SiC chips led to low porosity (1.3 to 2.1 %) and high bonding strength (26.1 to 48.3 MPa).The first use of Ag-8.2 Cu alloy nanotwinned film in this study exhibits a higher hardness and strength than those of the conventional pure Ag or Cu nanotwins.Sound shear strengths of 5.8 Kgf and 6.3 Kgf at the interface of Cu wire/SiC chip and Cu wire/DBC substrate, respectively, were achieved and the ultrasonic bonded specimens fractured in the Cu thick wire after shear tests, ensuring satisfactory joints.
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 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) | 0.002 | 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".