HCFC cleaning agents as alternatives for chlorofluorocarbons (CFCs) in the electronics industry
Bibliographic record
Abstract
The planned phase-out of chlorofluorocarbons (CFCs) set forth in the Montreal Protocol has required CFC-113 users to examine alternative technologies for cleaning printed wiring boards (PWBs). One class of alternatives is HCFCs or hydrochlorofluorocarbon-based cleaning agents. The authors discuss the effectiveness and ecology of two HCFC alternatives (HCFC-123 and HCFC-141b), presenting the advantages and tradeoffs of each. They also compare the properties and performance of a specific HCFC blend designed for electronics cleaning (consisting of 62.2% HCFC-141b, 35% HCFC-123, 2.5% methanol, and 0.3% stabilizer) to those of CFC-113/methanol, the current industry standard. This HCFC blend has exceeded the performance of CFC-113/methanol for removing ionic contamination and residual rosin. In addition, the authors describe the equipment and process design considerations for HCFC alternatives.>
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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".