Ball Milled Si-W Alloys: Part I. Microstructural and Phase Evolution during Ball Milling
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Bibliographic record
Abstract
In this first part of a two-part study of the synthesis, microstructure and electrochemical properties of ball milled silicon-tungsten alloys (Si100-xWx, x = 15, 20, 25, 30), the ball milling process is discussed in detail. The phase evolution was quantitatively followed during milling, allowing for a detailed understanding of the ball milling process. A volume element model of the process was developed that uses only three parameters that are directly related to the milling conditions. This model was found to well explain the ball milling process and suggests that energy initially accumulates in the Si and W powders after every ball collision. Eventually the stored energy overcomes activation energy for the reaction of Si and W to form Si2W. The kinetics of these processes and the tendency for reactants to cake in the mill are important parameters to consider for the practical synthesis of different Si-metal alloy materials.
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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 | 0.000 | 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