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A platform for research: civil engineering, architecture and urbanism
Carbon/carbon composite material surface grid structure enhanced anti-ablation coating as well as preparation method and application thereof
The invention relates to a carbon/carbon composite material surface grid structure reinforced anti-ablation coating and a preparation method and application thereof.A selective laser melting technology is adopted, a metal W grid is manufactured on the surface of a carbon/carbon composite material in an additive mode, chemical bonding is formed at the interface of the metal W grid and the surface of the carbon/carbon composite material through an in-situ reaction between W and C, and the interface bonding strength is improved; the Si-SiC coating is prepared on the W grid structure and the surface of the carbon/carbon composite material matrix by using a laser cladding method, and the coating is compact in structure, can realize the barrier effect of external oxygen with the grid and the matrix, and has a high-temperature aerobic protection function. By means of strong interface bonding, extreme high temperature resistance and melt flow blocking characteristics of the high-melting-point grid structure, the stability of a coating sample under high-temperature flame flow scouring is effectively improved, and the ablation resistance of the coating is improved accordingly. The feasibility of applying the W-grid enhanced Si-SiC laser cladding layer to an aircraft engine is provided, and the W-grid enhanced Si-SiC laser cladding layer has important reference significance and practical value for high-temperature aerobic protection of structural components in a thermal erosion environment.
本发明涉及一种碳/碳复合材料表面网格结构增强抗烧蚀涂层及制备方法和应用，采用激光选区熔化技术，在碳/碳复合材料表面增材制造金属W网格，两者界面处通过W与C间原位反应形成化学结合，提升界面结合强度；利用激光熔覆方法，在W网格结构及碳/碳复合材料基体表面制备Si‑SiC涂层，该涂层结构致密，可实现外界氧气同网格、基体的阻隔作用，具备高温有氧防护功能。本发明借助高熔点网格结构的强界面结合、耐极端高温与阻挡熔体流动特性，有效提升涂层试样在高温焰流冲刷下的稳定性，涂层的抗烧蚀性能随之增强。提供了W网格增强Si‑SiC激光熔覆层应用于飞行器发动机的可行性，对于热力冲蚀环境下结构部件的高温有氧防护具有重要借鉴意义和实用价值。
Carbon/carbon composite material surface grid structure enhanced anti-ablation coating as well as preparation method and application thereof
The invention relates to a carbon/carbon composite material surface grid structure reinforced anti-ablation coating and a preparation method and application thereof.A selective laser melting technology is adopted, a metal W grid is manufactured on the surface of a carbon/carbon composite material in an additive mode, chemical bonding is formed at the interface of the metal W grid and the surface of the carbon/carbon composite material through an in-situ reaction between W and C, and the interface bonding strength is improved; the Si-SiC coating is prepared on the W grid structure and the surface of the carbon/carbon composite material matrix by using a laser cladding method, and the coating is compact in structure, can realize the barrier effect of external oxygen with the grid and the matrix, and has a high-temperature aerobic protection function. By means of strong interface bonding, extreme high temperature resistance and melt flow blocking characteristics of the high-melting-point grid structure, the stability of a coating sample under high-temperature flame flow scouring is effectively improved, and the ablation resistance of the coating is improved accordingly. The feasibility of applying the W-grid enhanced Si-SiC laser cladding layer to an aircraft engine is provided, and the W-grid enhanced Si-SiC laser cladding layer has important reference significance and practical value for high-temperature aerobic protection of structural components in a thermal erosion environment.
本发明涉及一种碳/碳复合材料表面网格结构增强抗烧蚀涂层及制备方法和应用，采用激光选区熔化技术，在碳/碳复合材料表面增材制造金属W网格，两者界面处通过W与C间原位反应形成化学结合，提升界面结合强度；利用激光熔覆方法，在W网格结构及碳/碳复合材料基体表面制备Si‑SiC涂层，该涂层结构致密，可实现外界氧气同网格、基体的阻隔作用，具备高温有氧防护功能。本发明借助高熔点网格结构的强界面结合、耐极端高温与阻挡熔体流动特性，有效提升涂层试样在高温焰流冲刷下的稳定性，涂层的抗烧蚀性能随之增强。提供了W网格增强Si‑SiC激光熔覆层应用于飞行器发动机的可行性，对于热力冲蚀环境下结构部件的高温有氧防护具有重要借鉴意义和实用价值。
Carbon/carbon composite material surface grid structure enhanced anti-ablation coating as well as preparation method and application thereof
一种碳/碳复合材料表面网格结构增强抗烧蚀涂层及制备方法和应用
LI HEJUN (author) / WANG HANHUI (author) / SHI XIAOHONG (author) / LI WEI (author) / ZHANG YUTAI (author) / FAN ZIYI (author)
2023-08-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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