Second Phase Evolution in a Yttria-Sintered Aluminum Nitride Ceramic
Bibliographic record
Abstract
One of the important features of the microstructure of yttria-sintered AlN ceramics is the second phase. The type, morphology, and distribution of the second phase influence the thermal conductivity. In the present research, the effects of sintering temperature, time and cooling rate on the second phase evolution were investigated. Different morphologies of second phase were detected, characterized and quantified using scanning electron microscopy and image analysis. Moreover, the thermal conductivity of the specimens representing different microstructures was measured. The major second phase present in the specimens was YAM. The second phase was present in isolated, interconnected, agglomerated morphologies the volume fractions of which change significantly by varying the sintering parameters. The total quantity of second phase(s) increases when the sintering temperature is increased. The direct effect of second phase morphology on the thermal conductivity of AlN is discussed.
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How this classification was reachedexpand
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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.013 | 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; both teacher heads agree on what is shown here.
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".