Abstract
Carbon/carbon (C/C) composites have been widely used as ablative materials with excellent performance, it has great potential to be used as laser ablation resistant material. In this paper, C/C composites with different densities were prepared. CO2 laser was used as the heat source to explore the interaction mechanism between high-energy laser and C/C composite material under oxygen-free atmosphere, and systematically analyze the influence of C/C properties and laser parameters on ablation performance. The ablation depth was characterized by 3D profilometer. The results show that the variation of C/C ablation behavior is nonlinear with the change of ablation time or laser power. Intrinsic properties of C/C composites determine the thermal load, which determines the ablative performance of C/C composites. When the laser heat flux is greater than the thermal load of the material, the linear ablation rate will rise drastically.
| Translated title of the contribution | Laser ablation behavior and mechanism of carbon/carbon composites |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 4337-4343 |
| Number of pages | 7 |
| Journal | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
| Volume | 39 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2022 |