Development of Novel Activators for use in Halogen Free and Water Soluble Solder Pastes
Why this work is in the frame
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Bibliographic record
Abstract
ABSTRACT RoHS and REACH environmental regulations have had a significant impact on the materials used in PCB assembly with the solder and soldering processes being profoundly affected. The elimination of lead (Pb) and restrictions on halides/halogens used in fluxes have proven to be some of the more difficult challenges to overcome. In this paper we explore a potential new class of activators which offer improved performance versus traditional activator systems in terms of paste processing, soldering performance and reliability. In order to demonstrate the versatility of these activators we study their use in both no clean and water soluble pastes and compare them to pastes containing traditional activators. It is demonstrated that these activators improve the activity of the paste without creating other issues such as corrosion.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| 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