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Multilayer structure environmental barrier coating for silicon carbide ceramic matrix composite material and preparation method thereof
The invention relates to a multilayer structure environmental barrier coating for a silicon carbide ceramic matrix composite material and a preparation method of the multilayer structure environmental barrier coating. The method comprises the following steps: carrying out sand blasting, polishing, ultrasonic cleaning and drying on the silicon carbide ceramic matrix composite material; sequentially preparing a bonding layer Si, a middle first layer Yb2O3-2SiO2, a middle second layer Yb2O3-SiO2 and an outer layer La2O3-2MgO-11Al2O3 on the surface of a pretreated silicon carbide ceramic matrix composite material by using an atmospheric plasma spraying method. The multilayer structure environmental barrier coating prepared by the method is compactly combined with the silicon carbide ceramic matrix composite material, can provide effective protection for the composite material in an oxygen-enriched high-temperature environment, and can be used at the temperature of 1350 DEG C for more than 500 hours.
本发明涉及一种用于碳化硅陶瓷基复合材料的多层结构环境障涂层及其制备方法。该方法包括：将碳化硅陶瓷基复合材料进行喷砂、打磨、超声波清洗和干燥；利用大气等离子喷涂方法，在预处理后的碳化硅陶瓷基复合材料表面依次制备粘结层Si、中间第一层Yb2O3‑2SiO2、中间第二层Yb2O3‑SiO2和外层La2O3‑2MgO‑11Al2O3。该方法制备的多层结构环境障涂层与碳化硅陶瓷基复合材料结合致密，在富氧高温环境下对碳化硅陶瓷基复合材料可提供有效防护，长期使用温度1350℃、时间超过500小时。
Multilayer structure environmental barrier coating for silicon carbide ceramic matrix composite material and preparation method thereof
The invention relates to a multilayer structure environmental barrier coating for a silicon carbide ceramic matrix composite material and a preparation method of the multilayer structure environmental barrier coating. The method comprises the following steps: carrying out sand blasting, polishing, ultrasonic cleaning and drying on the silicon carbide ceramic matrix composite material; sequentially preparing a bonding layer Si, a middle first layer Yb2O3-2SiO2, a middle second layer Yb2O3-SiO2 and an outer layer La2O3-2MgO-11Al2O3 on the surface of a pretreated silicon carbide ceramic matrix composite material by using an atmospheric plasma spraying method. The multilayer structure environmental barrier coating prepared by the method is compactly combined with the silicon carbide ceramic matrix composite material, can provide effective protection for the composite material in an oxygen-enriched high-temperature environment, and can be used at the temperature of 1350 DEG C for more than 500 hours.
本发明涉及一种用于碳化硅陶瓷基复合材料的多层结构环境障涂层及其制备方法。该方法包括：将碳化硅陶瓷基复合材料进行喷砂、打磨、超声波清洗和干燥；利用大气等离子喷涂方法，在预处理后的碳化硅陶瓷基复合材料表面依次制备粘结层Si、中间第一层Yb2O3‑2SiO2、中间第二层Yb2O3‑SiO2和外层La2O3‑2MgO‑11Al2O3。该方法制备的多层结构环境障涂层与碳化硅陶瓷基复合材料结合致密，在富氧高温环境下对碳化硅陶瓷基复合材料可提供有效防护，长期使用温度1350℃、时间超过500小时。
Multilayer structure environmental barrier coating for silicon carbide ceramic matrix composite material and preparation method thereof
一种用于碳化硅陶瓷基复合材料的多层结构环境障涂层及其制备方法
CAO XUEQIANG (author) / HU QING (author) / HUANG JINGQI (author) / LI GUI (author) / DENG LONGHUI (author) / DONG SHUJUAN (author) / JIANG JIANING (author) / CAO QIN (author) / ZHOU XIN (author)
2021-06-11
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
Silicon carbide ceramic composite material and preparation method thereof
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