About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrahigh-Temperature Processing and Manufacturing
|
| Presentation Title |
Elevated-temperature laser ablation experiment of high-temperature ceramics |
| Author(s) |
Seongmin Yoon, Mahavir Singh, Dibya Jyoti Basu, Vikas Tomar |
| On-Site Speaker (Planned) |
Seongmin Yoon |
| Abstract Scope |
Laser ablation testing has gained interest as a laboratory-scale method for simulating the extreme thermal and energy-flux environments experienced by aerospace components. However, most laser ablation studies are conducted at room temperature, potentially overlooking the influence of elevated service temperatures on material response. This work presents the development of an experimental platform for laser ablation under controlled elevated-temperature conditions to investigate the effects of quasi-static thermal preheating on ablation behavior. Silicon carbide ceramics are evaluated at room temperature and preheated to 500 °C before being subjected to 1.35 J, 1064 nm laser pulses, generating transient temperatures of several thousand degrees. Post-ablation surface morphology is quantified using optical profilometry, while Raman spectroscopy assesses ablation-induced chemical changes. The study aims to establish relationships between preheating temperature, damage evolution, and degradation mechanisms in ceramics subjected to high-energy laser loading. The methodology provides a framework for evaluating thermal-environment effects during laser ablation of ceramics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Ceramics, Environmental Effects |