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Preparation method of anti-oxidation ablation coating on surface of C/C composite material
The invention relates to a preparation method of an anti-oxidation ablation coating on the surface of a C/C composite material. The superhigh-temperature ceramic precursor is subjected to cracking reaction and is gradually deposited on the surface of the C/C composite material by adopting a chemical liquid-phase vaporizing deposition process and utilizing the specific skin effect of the superhigh-temperature ceramic precursor. And finally, high-temperature heat treatment is carried out, so that the ultrahigh-temperature ceramic is fully converted, and the anti-oxidation ablation coating is prepared on the surface of the C/C composite material. The innovation of the preparation method is that a chemical liquid phase vaporizing deposition process is adopted, and the skin effect which should be reduced or avoided in the densification process of the composite material is developed and utilized, so that the anti-oxidation ablation coating is successfully prepared on the surface of the C/C composite material, and the defects that a coating prepared by a traditional process is non-uniform in thickness, not high in bonding strength with a matrix and not high in corrosion resistance are overcome. The defects of non-uniform ceramic distribution, non-compact structure and the like are overcome, and the anti-oxidation and anti-ablation performance of the surface coating of the C/C composite material is further improved.
本发明涉及一种C/C复合材料表面抗氧化烧蚀涂层的制备方法。通过采用化学液相汽化沉积工艺，利用其特有的集肤效应，使超高温陶瓷前驱体发生裂解反应，并逐渐沉积在C/C复合材料表面。最后再进行高温热处理，使超高温陶瓷充分转化，从而在C/C复合材料表面制备出抗氧化烧蚀涂层。本发明的创新性在于采用化学液相汽化沉积工艺，并通过对复合材料致密化过程中本应减小或避免的集肤效应进行开发利用，成功在C/C复合材料表面制备出抗氧化烧蚀涂层，从而克服传统工艺制备的涂层厚度不均一，与基体结合强度不高，陶瓷分布不均匀，结构不致密等缺点，实现C/C复合材料表面涂层防氧化、抗烧蚀性能的进一步提升。
Preparation method of anti-oxidation ablation coating on surface of C/C composite material
The invention relates to a preparation method of an anti-oxidation ablation coating on the surface of a C/C composite material. The superhigh-temperature ceramic precursor is subjected to cracking reaction and is gradually deposited on the surface of the C/C composite material by adopting a chemical liquid-phase vaporizing deposition process and utilizing the specific skin effect of the superhigh-temperature ceramic precursor. And finally, high-temperature heat treatment is carried out, so that the ultrahigh-temperature ceramic is fully converted, and the anti-oxidation ablation coating is prepared on the surface of the C/C composite material. The innovation of the preparation method is that a chemical liquid phase vaporizing deposition process is adopted, and the skin effect which should be reduced or avoided in the densification process of the composite material is developed and utilized, so that the anti-oxidation ablation coating is successfully prepared on the surface of the C/C composite material, and the defects that a coating prepared by a traditional process is non-uniform in thickness, not high in bonding strength with a matrix and not high in corrosion resistance are overcome. The defects of non-uniform ceramic distribution, non-compact structure and the like are overcome, and the anti-oxidation and anti-ablation performance of the surface coating of the C/C composite material is further improved.
本发明涉及一种C/C复合材料表面抗氧化烧蚀涂层的制备方法。通过采用化学液相汽化沉积工艺，利用其特有的集肤效应，使超高温陶瓷前驱体发生裂解反应，并逐渐沉积在C/C复合材料表面。最后再进行高温热处理，使超高温陶瓷充分转化，从而在C/C复合材料表面制备出抗氧化烧蚀涂层。本发明的创新性在于采用化学液相汽化沉积工艺，并通过对复合材料致密化过程中本应减小或避免的集肤效应进行开发利用，成功在C/C复合材料表面制备出抗氧化烧蚀涂层，从而克服传统工艺制备的涂层厚度不均一，与基体结合强度不高，陶瓷分布不均匀，结构不致密等缺点，实现C/C复合材料表面涂层防氧化、抗烧蚀性能的进一步提升。
Preparation method of anti-oxidation ablation coating on surface of C/C composite material
一种C/C复合材料表面抗氧化烧蚀涂层的制备方法
HE QINCHUAN (author) / JIAO XIAOYANG (author) / TAN QING (author) / WANG YIQUN (author)
2022-09-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Preparation method of anti-oxidation ablation coating on surface of C/C composite material
| European Patent Office | 2021
| European Patent Office | 2022