Joining SiC Ceramics with Ti<sub>3</sub>SiC<sub>2</sub>/Ti<sub>x</sub>C<sub>y</sub> Multi-Interlayer by Spark Plasma Sintering
Bibliographic record
Abstract
Spark plasma sintering (SPS) is a promising method to obtain robust silicon carbide (SiC) joint at a relatively low temperature within a short time. In this work, the joint of SiC ceramics was prepared with TiH2, Si and C mixture powders by SPS from 1150 to 1450 °C for 10 min. The microstructure of SiC joints was observed by scanning electron microscopy (SEM), and the phase composition of the interlayer was determined by x-ray diffraction (XRD) and energy dispersive spectrometer (EDS). The mechanical properties of SiC joints were evaluated by the single lap shear test. The results showed that the microstructure and phase composition of the joints depended on the joining temperature. A dense joint could be obtained above 1250 °C. Ti3SiC2 and TixCy were found in all joints. Also, the decomposition of Ti3SiC2 occurred in the 1450 °C joint. The highest shear strength of 80.5 ± 7.4 MPa was obtained in the 1350 °C joint. The fracture occurred within the joining interlayer and SiC ceramics during shear test, except for the 1150 °C joint, which existed obvious cavities in the joint.
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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 | 0.000 | 0.001 |
| 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) | 0.001 | 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 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".