Corrosion Resistance of Next Generation Composite Tube Alloys for Recovery Boilers
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Composite tubes made with either 304L, A825 or A625 exterior layers are commonly used to construct the lower-furnace waterwalls of black liquor recovery boilers currently operated in North America. While these composite tubes have been very successful in resisting sulphidation corrosion, they have experienced unanticipated problems with the exterior layer, namely cracking, and, to a lesser extent, preferential corrosion of port opening tubes. In an attempt to evaluate the suitability of alternative composite tube alloys, a laboratory-based testing program was conducted to evaluate the corrosion resistance of ferritic stainless steels (Types 430 and 446) and nickel-based alloys (Alloys 600 and 690) in simulated black liquor recovery boiler lower-furnace environments. An effort was made to utilize simulated environments that are believed to reproduce the key features of the various damage modes typically observed in the lower-furnace sections of high-pressure recovery boilers. This report documents the major findings of this effort.
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.
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 | 0.000 |
| 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 it