@article{Zhang2025, 
author = {Qiqiang Zhang and Hao Zhang and Man Jiang and Qingguo Feng and Chunfeng Hu},
title = {Cyclic ablation mechanisms of Cr2AlC ceramics in nitrogen plasma flame at 1600 ℃},
year = {2025},
journal = {Extreme Materials},
volume = {1},
number = {3},
pages = {1-8},
keywords = {Microstructure, Ablation, Ceramic, Mechanism, Cr2AlC},
url = {https://www.sciopen.com/article/10.1016/j.exm.2025.07.002},
doi = {10.1016/j.exm.2025.07.002},
abstract = {Cr2AlC, as a ternary layered MAX phase ceramic with excellent oxidation resistance and ablation resistance, has great potential in thermal protection materials. To further tap its potential as a recyclable thermal protection material in extreme environment, the cyclic ablation performance of Cr2AlC under nitrogen plasma flame at 1600 ℃ was systematically studied in this paper. During the cycles (each lasting three minutes) of ablation, Cr2AlC maintained structural integrity and exhibited low linear and mass ablation rates. After three cycles of ablation, the linear ablation rate and mass ablation rate were 0.050 µm/s and 0.048 mg/s, respectively. The analysis of surface and near-surface components shows that Al8Cr5 produced by the decomposition of Cr2AlC is the origin of the excellent ablation performance of Cr2AlC ceramics. However, as the cycle time and total ablation time increase, Cr2AlC and Al8Cr5 near the surface will be depleted under high-temperature oxidation, leading to material failure. This study presents the excellent cycling and long-term ablation properties of Cr2AlC ceramics, revealing their enormous application prospects in reproducible thermal protection materials.}
}