Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of ceramic matrix composite surface priming coat
The invention relates to a preparation method of a ceramic matrix composite surface priming coat. A combined method of combining a slurry method with a silicon carbide in-situ reaction process is utilized to realize surface leveling of a composite material, and then a low-pressure chemical vapor deposition process is matched to prepare a silicon-rich silicon carbide priming coat of the environmental barrier coating for SiC/SiC and C/SiC composite materials. The method has the advantages that 1) the proportion of each component in a slurry precursor can be adjusted according to the characteristics of different surface defects to obtain proper viscosity, so that a better defect filling effect is achieved; 2) an integrated reaction of the repair slurry and the composite material through a high-temperature cracking process is realized; 3) a silicon-rich silicon carbide priming coat is obtained on the surface of a composite material by adopting a low-pressure chemical vapor deposition process, so that the quality of the environmental barrier coating is improved, and the service life of the environmental barrier coating is prolonged; and (4) the silicon-rich silicon carbide coating is deposited on the surface of the composite material, so that the temperature resistance and the high-temperature oxidation resistance of the composite material are improved, the bonding strength of the environmental barrier coating and the composite material matrix is enhanced, and the thermal expansion matching of the environmental barrier coating and the composite material matrix is improved.
本发明是一种陶瓷基复合材料表面打底层的制备方法，利用料浆法结合碳化硅原位反应工艺的组合式方法实现复合材料表面平整，再配合低压化学气相沉积工艺制备SiC/SiC和C/SiC复合材料用环境障涂层的富硅碳化硅打底层。该方法的优点是：1)能够根据不同表面缺陷的特点调节浆料前驱体中各组分配比以得到合适的粘度，从而达到较好的缺陷填充效果；2)通过高温裂解工艺实现修复浆料与复合材料的一体化反应；3)采用低压化学气相沉积工艺在复合材料表面得到富硅的碳化硅打底层，提高了环境障涂层的质量，延长了环境障涂层的寿命；4)同时由于复材表面沉积了富硅的碳化硅涂层，既提高了复合材料的耐温性和抗高温氧化性，又增强了环境障涂层与复材基体的粘结强度，还改善了环境障涂层与复材基体的热膨胀匹配。
Preparation method of ceramic matrix composite surface priming coat
The invention relates to a preparation method of a ceramic matrix composite surface priming coat. A combined method of combining a slurry method with a silicon carbide in-situ reaction process is utilized to realize surface leveling of a composite material, and then a low-pressure chemical vapor deposition process is matched to prepare a silicon-rich silicon carbide priming coat of the environmental barrier coating for SiC/SiC and C/SiC composite materials. The method has the advantages that 1) the proportion of each component in a slurry precursor can be adjusted according to the characteristics of different surface defects to obtain proper viscosity, so that a better defect filling effect is achieved; 2) an integrated reaction of the repair slurry and the composite material through a high-temperature cracking process is realized; 3) a silicon-rich silicon carbide priming coat is obtained on the surface of a composite material by adopting a low-pressure chemical vapor deposition process, so that the quality of the environmental barrier coating is improved, and the service life of the environmental barrier coating is prolonged; and (4) the silicon-rich silicon carbide coating is deposited on the surface of the composite material, so that the temperature resistance and the high-temperature oxidation resistance of the composite material are improved, the bonding strength of the environmental barrier coating and the composite material matrix is enhanced, and the thermal expansion matching of the environmental barrier coating and the composite material matrix is improved.
本发明是一种陶瓷基复合材料表面打底层的制备方法，利用料浆法结合碳化硅原位反应工艺的组合式方法实现复合材料表面平整，再配合低压化学气相沉积工艺制备SiC/SiC和C/SiC复合材料用环境障涂层的富硅碳化硅打底层。该方法的优点是：1)能够根据不同表面缺陷的特点调节浆料前驱体中各组分配比以得到合适的粘度，从而达到较好的缺陷填充效果；2)通过高温裂解工艺实现修复浆料与复合材料的一体化反应；3)采用低压化学气相沉积工艺在复合材料表面得到富硅的碳化硅打底层，提高了环境障涂层的质量，延长了环境障涂层的寿命；4)同时由于复材表面沉积了富硅的碳化硅涂层，既提高了复合材料的耐温性和抗高温氧化性，又增强了环境障涂层与复材基体的粘结强度，还改善了环境障涂层与复材基体的热膨胀匹配。
Preparation method of ceramic matrix composite surface priming coat
一种陶瓷基复合材料表面打底层的制备方法
LUO WENDONG (Autor:in) / QIU HAIPENG (Autor:in) / GUAN HONG (Autor:in) / WANG LING (Autor:in) / CHEN MINGWEI (Autor:in) / LIU SHANHUA (Autor:in) / XIE WEIJIE (Autor:in) / WANG QIMING (Autor:in) / ZHAO YULIANG (Autor:in) / ZHANG BINGYU (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2018
HIGH DENSITY BOND COAT FOR CERAMIC OR CERAMIC MATRIX COMPOSITES
| Europäisches Patentamt | 2018
CERAMIC MATRIX COMPOSITE MANUFACTURING METHOD AND CERAMIC MATRIX COMPOSITE
| Europäisches Patentamt | 2022
Ceramic matrix composite manufacturing method and ceramic matrix composite
| Europäisches Patentamt | 2024