Ablation resistance of double-layer SiC/ZrB <sub>2</sub> -SiC-La <sub>2</sub> O <sub>3</sub> coating for SiC-coated graphite exposed to oxyacetylene torch
The ablation resistance of double-layer SiC/ZrB 2 -SiC-La 2 O 3 coating for SiC-coated graphite at temperatures of 1600∼2100 o C was investigated by exposure test of an oxyacetylene torch. The double-layer structure of the as-prepared SiC/ZrB 2 -SiC-La 2 O 3 coating guaranteed its ablation resistance in a wide temperature range. The results showed that the linear ablation rates and the mass ablation rates of the tested samples increased with increasing ablation temperature. At 1600 o C, the SiC outer layer could protect the underneath coating effectively due to the formation of a SiO 2 scale. The evaporation of SiO 2 became severe with increasing ablation temperature, where ablation resistance was provided by the sintered ZrO 2 scale.
Authors
- Meishuan Li
- Yuhai Qian
- Jun Zuo (ORCID: https://orcid.org/0000-0002-2763-3348)
- Yan Ren (ORCID: https://orcid.org/0000-0002-1421-8487)
- Jingjun Xu (ORCID: https://orcid.org/0000-0002-5218-5831)
Institutions
- University of Science and Technology of China (CN)
- Chinese Academy of Sciences (CN)
- China General Nuclear Power Corporation (China) (CN)
Publication Details
- Journal
- Advances in Applied Ceramics Structural Functional and Bioceramics
- Published
- 2025-03-01
- DOI
- https://doi.org/10.1177/17436753251322558
- Primary Topic
- Advanced ceramic materials synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China