RE <sub>2</sub> Ti <sub>2</sub> O <sub>7</sub> coatings with both high reflectivity and low thermal conductivity for high‐power laser protection
Abstract With the rapid development of laser technology, the safety of human and equipment is increasingly threatened by high‐power laser. However, there are not any high‐power laser protection materials without flame and smoke during irradiation. In this study, we investigated a series of RE 2 Ti 2 O 7 (RE = Y, La, Sm, Eu, Yb) ceramics with high reflectivity and low thermal conductivity and evaluated their laser ablation behaviors. The results showed that all RE 2 Ti 2 O 7 have high reflectivity comparable to that of metals, and their thermal conductivity is lower than 8YSZ. Laser ablation results showed all coatings were intact after irradiation under 500 W/cm 2 for 10 s. Even after irradiation under 1000 W/cm 2 for 10 s, no significant changes were observed in the Y 2 Ti 2 O 7 and La 2 Ti 2 O 7 coatings. Further exploration determined that the protection threshold of Y 2 Ti 2 O 7 was 84 s while that of La 2 Ti 2 O 7 was 163 s, indicating its superior laser protection capability. In conclusion, La 2 Ti 2 O 7 shows significant potential in high‐power laser protection.
Authors
- Tong Zhang (ORCID: https://orcid.org/0009-0006-0309-5609)
- Mengqing Zhang (ORCID: https://orcid.org/0000-0002-1954-7802)
- Jiayi Zheng (ORCID: https://orcid.org/0000-0002-3425-0353)
- Zijun Li (ORCID: https://orcid.org/0000-0003-4706-8451)
- Shuo Wang (ORCID: https://orcid.org/0000-0001-9968-418X)
Institutions
- Academy of Military Medical Sciences (CN)
Publication Details
- Journal
- Journal of the American Ceramic Society
- Published
- 2025-04-29
- DOI
- https://doi.org/10.1111/jace.20599
- Citations
- 3
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 1.55
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation