Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of SiCf/SiC ceramic matrix composite self-healing environmental barrier coating
The invention discloses a preparation method of a self-healing environmental barrier coating of a SiCf/SiC ceramic matrix composite, a compact SiC gradient coating (SiC bonding layer) is prepared by adopting an embedding method, the SiC gradient coating and a SiCf/SiC composite matrix are both made of SiC materials, the SiC gradient coating has good physical and chemical compatibility, the phenomena of coating cracking, separation and peeling caused by thermal expansion difference under a high-temperature working condition are avoided, and the self-healing environmental barrier coating of the SiCf/SiC ceramic matrix composite is prepared. The surface layer of the Yb2SiO5-Yb2Si2O7-SiCw coating has the advantages that the surface layer of the Yb2SiO5-Yb2Si2O7-SiCw coating can be coated with the Yb2SiO5-Yb2Si2O7-SiCw coating, the interface bonding capacity of the coating and a matrix is improved, the rare earth silicate environmental barrier coating is uniform and high in density and has high binding force with the SiC bonding layer prepared through the embedding method, supersonic plasma spraying is adopted, gaps of the plasma spraying contact face of the embedded SiC coating are effectively filled, a Yb2SiO5-Yb2Si2O7-SiCw surface layer system is formed, and the effect of self-healing of cracks generated in the coating is achieved.
本发明公开了一种SiCf/SiC陶瓷基复合材料自愈合的环境障涂层的制备方法，采用包埋法制备出致密的SiC梯度涂层(SiC粘结层)，与SiCf/SiC复合材料基体均为SiC材质，具有良好的物理化学相容性，在高温工况下不会出现因热膨胀差引起的涂层龟裂和脱离剥落现象，提高涂层与基体的界面结合能力，并且其自身熔点高、抗氧化性能强，能为面层的Yb2SiO5‑Yb2Si2O7‑SiCw体系持续提供Si；稀土硅酸盐环境障涂层均匀、致密度高、与包埋法制备的SiC粘结层具有较高的结合力，采用超声速等离子喷涂，有效填充了包埋SiC涂层等离子喷涂接触面的空隙，形成Yb2SiO5‑Yb2Si2O7‑SiCw面层体系，达到自愈合涂层内部产生的裂纹的作用。
Preparation method of SiCf/SiC ceramic matrix composite self-healing environmental barrier coating
The invention discloses a preparation method of a self-healing environmental barrier coating of a SiCf/SiC ceramic matrix composite, a compact SiC gradient coating (SiC bonding layer) is prepared by adopting an embedding method, the SiC gradient coating and a SiCf/SiC composite matrix are both made of SiC materials, the SiC gradient coating has good physical and chemical compatibility, the phenomena of coating cracking, separation and peeling caused by thermal expansion difference under a high-temperature working condition are avoided, and the self-healing environmental barrier coating of the SiCf/SiC ceramic matrix composite is prepared. The surface layer of the Yb2SiO5-Yb2Si2O7-SiCw coating has the advantages that the surface layer of the Yb2SiO5-Yb2Si2O7-SiCw coating can be coated with the Yb2SiO5-Yb2Si2O7-SiCw coating, the interface bonding capacity of the coating and a matrix is improved, the rare earth silicate environmental barrier coating is uniform and high in density and has high binding force with the SiC bonding layer prepared through the embedding method, supersonic plasma spraying is adopted, gaps of the plasma spraying contact face of the embedded SiC coating are effectively filled, a Yb2SiO5-Yb2Si2O7-SiCw surface layer system is formed, and the effect of self-healing of cracks generated in the coating is achieved.
本发明公开了一种SiCf/SiC陶瓷基复合材料自愈合的环境障涂层的制备方法，采用包埋法制备出致密的SiC梯度涂层(SiC粘结层)，与SiCf/SiC复合材料基体均为SiC材质，具有良好的物理化学相容性，在高温工况下不会出现因热膨胀差引起的涂层龟裂和脱离剥落现象，提高涂层与基体的界面结合能力，并且其自身熔点高、抗氧化性能强，能为面层的Yb2SiO5‑Yb2Si2O7‑SiCw体系持续提供Si；稀土硅酸盐环境障涂层均匀、致密度高、与包埋法制备的SiC粘结层具有较高的结合力，采用超声速等离子喷涂，有效填充了包埋SiC涂层等离子喷涂接触面的空隙，形成Yb2SiO5‑Yb2Si2O7‑SiCw面层体系，达到自愈合涂层内部产生的裂纹的作用。
Preparation method of SiCf/SiC ceramic matrix composite self-healing environmental barrier coating
一种SiCf/SiC陶瓷基复合材料自愈合的环境障涂层的制备方法
CHU TENGLONG (Autor:in) / JIANG YUANQIANG (Autor:in) / HUANG XIANGXIAN (Autor:in) / CAI WUJI (Autor:in) / CUI BINGXIA (Autor:in) / WANG HAN (Autor:in) / HUANG WEIBIN (Autor:in) / ZHU JIAMING (Autor:in)
16.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Environmental barrier coating for SiCf/SiC ceramic-based composite material and preparation method
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024
Preparation method of SiB6 modified self-healing SiCf/SiC composite material
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024
Repair method for blocky SiCf/SiC ceramic matrix composite component
| Europäisches Patentamt | 2024