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Environmental barrier coating material for SiC/SiC composite material and preparation method thereof
The invention belongs to the technical field of silicon carbide-based composite materials, and discloses an environmental barrier coating material for a SiC/SiC composite material and a preparation method of the environmental barrier coating material. The preparation method comprises the following steps: uniformly mixing Al2O3 powder, HfO2 powder and SiO2 powder, and carrying out wet ball milling to obtain slurry; drying the slurry, and grinding to obtain mixed powder; the mixed powder is sintered and then ground into powder, and the environmental barrier coating material for the SiC/SiC composite material is obtained. The technological process is simple, the technological feasibility is high, raw materials are easy to obtain, the thermal expansion coefficient of the environment barrier coating material prepared through the method is similar to that of a SiC/SiC composite material, the thermal expansion coefficient is adjustable, the dry air oxidation resistance is excellent, and the water and oxygen corrosion resistance is high.
本发明属于碳化硅基复合材料技术领域，公开一种SiC/SiC复合材料用的环境障涂层材料及其制备方法；所述制备方法为：将Al2O3粉、HfO2粉与SiO2粉混匀后，进行湿法球磨，获得浆料；将所述浆料干燥后研磨获得混合粉体；对所述混合粉体进行烧结处理后研磨成粉，即获得SiC/SiC复合材料用的环境障涂层材料。本发明的工艺流程简单、工艺可行性高、原材料易得，且本发明制备的环境障涂层材料的热膨胀系数与SiC/SiC复合材料近似且热膨胀系数可调、抗干燥空气氧化性优异、耐水氧腐蚀性高。
Environmental barrier coating material for SiC/SiC composite material and preparation method thereof
The invention belongs to the technical field of silicon carbide-based composite materials, and discloses an environmental barrier coating material for a SiC/SiC composite material and a preparation method of the environmental barrier coating material. The preparation method comprises the following steps: uniformly mixing Al2O3 powder, HfO2 powder and SiO2 powder, and carrying out wet ball milling to obtain slurry; drying the slurry, and grinding to obtain mixed powder; the mixed powder is sintered and then ground into powder, and the environmental barrier coating material for the SiC/SiC composite material is obtained. The technological process is simple, the technological feasibility is high, raw materials are easy to obtain, the thermal expansion coefficient of the environment barrier coating material prepared through the method is similar to that of a SiC/SiC composite material, the thermal expansion coefficient is adjustable, the dry air oxidation resistance is excellent, and the water and oxygen corrosion resistance is high.
本发明属于碳化硅基复合材料技术领域，公开一种SiC/SiC复合材料用的环境障涂层材料及其制备方法；所述制备方法为：将Al2O3粉、HfO2粉与SiO2粉混匀后，进行湿法球磨，获得浆料；将所述浆料干燥后研磨获得混合粉体；对所述混合粉体进行烧结处理后研磨成粉，即获得SiC/SiC复合材料用的环境障涂层材料。本发明的工艺流程简单、工艺可行性高、原材料易得，且本发明制备的环境障涂层材料的热膨胀系数与SiC/SiC复合材料近似且热膨胀系数可调、抗干燥空气氧化性优异、耐水氧腐蚀性高。
Environmental barrier coating material for SiC/SiC composite material and preparation method thereof
一种SiC/SiC复合材料用的环境障涂层材料及其制备方法
YANG HUIYONG (author) / WANG DETENG (author) / HUANG JUNTONG (author) / WANG LIANYI (author) / LUO RUIYING (author) / CHEN ZHI (author) / LI WEI (author) / WANG LUYAN (author) / YU HAIJIANG (author)
2024-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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