About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Understanding Laser–Material Interactions in Alumina for Ceramic Laser Processing |
| Author(s) |
Poh Yin Chong, Xingzhong Wu, Gabriel R. Castillo, Javier E. Garay |
| On-Site Speaker (Planned) |
Poh Yin Chong |
| Abstract Scope |
Ceramics possess excellent mechanical and chemical stability, making them challenging to process using conventional methods. Ultrafast laser processing presents a promising alternative, enabling localized modification with minimal thermal damage. Notably, hermetic ceramic seals have been achieved via ultrafast laser joining under ambient conditions, utilizing localized interfacial heating. To optimize such techniques, a clear understanding of laser–material interactions is essential. This study investigates the effects of high-intensity, single-shot irradiation on two forms of alumina (Al₂O₃): single-crystal alumina (undoped sapphire) and polycrystalline alumina. A 1030 nm femtosecond laser with a 490 fs pulse duration is used at intensities ranging from 10¹² W/cm² to 10¹⁵ W/cm². The two materials show distinctly different responses—thermal effects dominate in single-crystal alumina, while polycrystalline alumina exhibits fracture. These contrasting behaviors highlight the critical role of microstructure in laser response and underscore the need for fundamental insight into ultrafast laser–ceramic interactions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Other |