A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of long-time oxidation ablation resistant HfB2-SiC-TaSi2 coating of C/C composite material
The invention relates to a preparation method of a long-time oxidation ablation resistant HfB2-SiC-TaSi2 coating of a C/C composite material. The HfB2-SiC-TaSi2 coating is prepared on the surface of the C/C composite material through a slurry coating assisted high-temperature gas phase siliconizing method. The method specifically comprises the following steps: cleaning and drying the C/C composite material for later use; coating the surface of the C/C composite material with the slurry to prepare a resin-SiC inner pre-coating layer and a resin-HfB2-SiC-TaSi2 outer pre-coating layer; and the HfB2-SiC-TaSi2 coating is obtained through a high-temperature carbonization-gas phase siliconizing method. A proper amount of TaSi2 is added into the HfB2-SiC coating, so that the oxygen barrier capacity and stability of a glass phase generated on the high-temperature surface of the coating are improved, and the coating has good long-time ablation resistance. Slurry coating is combined with a high-temperature gas phase siliconizing method, through reasonable control over components, content and thickness of a pre-coating layer, thermal expansion mismatching of the coating layer and a C/C base body is relieved, and content control over HfB2 and TaSi2 is achieved. Slurry coating is combined with a high-temperature gas-phase siliconizing method, and the particle size and the resin content are regulated and controlled, so that the compactness of the coating and the binding property of the coating and a C/C matrix are improved.
本发明涉及一种C/C复合材料长时抗氧化烧蚀HfB2‑SiC‑TaSi2涂层的制备方法，通过料浆涂覆辅助高温气相渗硅法在C/C复合材料表面制备HfB2‑SiC‑TaSi2涂层。具体过程为：将C/C复合材料清洗后烘干备用；通过料浆涂覆在C/C复合材料表面制备树脂‑SiC内预涂层和树脂‑HfB2‑SiC‑TaSi2外预涂层；高温碳化‑气相渗硅法获得HfB2‑SiC‑TaSi2涂层。在HfB2‑SiC涂层中加入适量的TaSi2，提高涂层高温表面生成的玻璃相的阻氧能力和稳定性，使涂层具有良好的长时抗烧蚀性能。料浆涂覆结合高温气相渗硅法通过预涂层的组分、含量和厚度的合理控制，缓解涂层与C/C基体热膨胀不匹配和实现HfB2、TaSi2含量控制。料浆涂覆结合高温气相渗硅法通过调控颗粒尺寸以及树脂含量，提高涂层的致密性以及其与C/C基体的结合性。
Preparation method of long-time oxidation ablation resistant HfB2-SiC-TaSi2 coating of C/C composite material
The invention relates to a preparation method of a long-time oxidation ablation resistant HfB2-SiC-TaSi2 coating of a C/C composite material. The HfB2-SiC-TaSi2 coating is prepared on the surface of the C/C composite material through a slurry coating assisted high-temperature gas phase siliconizing method. The method specifically comprises the following steps: cleaning and drying the C/C composite material for later use; coating the surface of the C/C composite material with the slurry to prepare a resin-SiC inner pre-coating layer and a resin-HfB2-SiC-TaSi2 outer pre-coating layer; and the HfB2-SiC-TaSi2 coating is obtained through a high-temperature carbonization-gas phase siliconizing method. A proper amount of TaSi2 is added into the HfB2-SiC coating, so that the oxygen barrier capacity and stability of a glass phase generated on the high-temperature surface of the coating are improved, and the coating has good long-time ablation resistance. Slurry coating is combined with a high-temperature gas phase siliconizing method, through reasonable control over components, content and thickness of a pre-coating layer, thermal expansion mismatching of the coating layer and a C/C base body is relieved, and content control over HfB2 and TaSi2 is achieved. Slurry coating is combined with a high-temperature gas-phase siliconizing method, and the particle size and the resin content are regulated and controlled, so that the compactness of the coating and the binding property of the coating and a C/C matrix are improved.
本发明涉及一种C/C复合材料长时抗氧化烧蚀HfB2‑SiC‑TaSi2涂层的制备方法，通过料浆涂覆辅助高温气相渗硅法在C/C复合材料表面制备HfB2‑SiC‑TaSi2涂层。具体过程为：将C/C复合材料清洗后烘干备用；通过料浆涂覆在C/C复合材料表面制备树脂‑SiC内预涂层和树脂‑HfB2‑SiC‑TaSi2外预涂层；高温碳化‑气相渗硅法获得HfB2‑SiC‑TaSi2涂层。在HfB2‑SiC涂层中加入适量的TaSi2，提高涂层高温表面生成的玻璃相的阻氧能力和稳定性，使涂层具有良好的长时抗烧蚀性能。料浆涂覆结合高温气相渗硅法通过预涂层的组分、含量和厚度的合理控制，缓解涂层与C/C基体热膨胀不匹配和实现HfB2、TaSi2含量控制。料浆涂覆结合高温气相渗硅法通过调控颗粒尺寸以及树脂含量，提高涂层的致密性以及其与C/C基体的结合性。
Preparation method of long-time oxidation ablation resistant HfB2-SiC-TaSi2 coating of C/C composite material
C/C复合材料长时抗氧化烧蚀HfB2-SiC-TaSi2涂层的制备方法
ZHANG JIAPING (author) / HOU JIAQI (author) / LI HEJUN (author) / FU QIANGANG (author) / ZHOU LEI (author)
2022-08-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of SiC-HfB2 double-layer composite material
| European Patent Office | 2021
| European Patent Office | 2020
| European Patent Office | 2021
Preparation method of antioxidant SiCf/SiC-HfB2 composite material
| European Patent Office | 2023