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Hydrothermal-corrosion-resistant and high-temperature-oxidation-resistant silicon carbide ceramic weldment as well as preparation method and application thereof
The invention belongs to the technical field of ceramic welding, and discloses a hydrothermal corrosion and high-temperature oxidation resistant silicon carbide ceramic weldment and a preparation method and application thereof.The method comprises the steps that Al2O3, MgO, CaO, HfO2, Nd2O3 and SiO2 powder are subjected to ball milling and mixing, water quenching is conducted at the temperature of 1600-1700 DEG C to obtain glass, glass powder is obtained through grinding, refining and sieving, the glass powder is subjected to dry pressing forming to obtain a glass green body, the glass green body is subjected to sintering, and the silicon carbide ceramic weldment is obtained. The glass block is placed in the to-be-welded areas of the two SiC ceramics, then the two SiC ceramics are placed according to the structure of a to-be-formed product to obtain a to-be-connected assembly, the to-be-connected assembly is placed in a heating furnace to be subjected to heat treatment at the temperature of 1350-1600 DEG C in the protective atmosphere under mechanical pressure, and the silicon carbide ceramic welding part is obtained. The silicon carbide ceramic weldment has good hydrothermal corrosion resistance and high-temperature oxidation resistance, and can be applied to the fields of high-temperature heat exchange and nuclear energy.
本发明属于陶瓷焊接技术领域，公开了一种耐水热腐蚀和高温氧化的碳化硅陶瓷焊接件及其制备方法和应用，该方法是将Al2O3、MgO、CaO、HfO2、Nd2O3和SiO2粉体球磨混合，在1600～1700℃水淬得到玻璃，经研磨细化和过筛，得到玻璃粉体，将玻璃粉体经干压成型，得到玻璃生坯，将玻璃块体放置于两个SiC陶瓷的待焊接区域，然后将两个SiC陶瓷按照待成型产品的构造放置，得到待连接组件，将待连接组件放入加热炉中经机械压力，在保护气氛中在1350～1600℃进行热处理，得到碳化硅陶瓷焊接件。该碳化硅陶瓷焊接件具有良好的耐水热腐蚀和高温氧化性能，可应用在高温换热和核能领域。
Hydrothermal-corrosion-resistant and high-temperature-oxidation-resistant silicon carbide ceramic weldment as well as preparation method and application thereof
The invention belongs to the technical field of ceramic welding, and discloses a hydrothermal corrosion and high-temperature oxidation resistant silicon carbide ceramic weldment and a preparation method and application thereof.The method comprises the steps that Al2O3, MgO, CaO, HfO2, Nd2O3 and SiO2 powder are subjected to ball milling and mixing, water quenching is conducted at the temperature of 1600-1700 DEG C to obtain glass, glass powder is obtained through grinding, refining and sieving, the glass powder is subjected to dry pressing forming to obtain a glass green body, the glass green body is subjected to sintering, and the silicon carbide ceramic weldment is obtained. The glass block is placed in the to-be-welded areas of the two SiC ceramics, then the two SiC ceramics are placed according to the structure of a to-be-formed product to obtain a to-be-connected assembly, the to-be-connected assembly is placed in a heating furnace to be subjected to heat treatment at the temperature of 1350-1600 DEG C in the protective atmosphere under mechanical pressure, and the silicon carbide ceramic welding part is obtained. The silicon carbide ceramic weldment has good hydrothermal corrosion resistance and high-temperature oxidation resistance, and can be applied to the fields of high-temperature heat exchange and nuclear energy.
本发明属于陶瓷焊接技术领域，公开了一种耐水热腐蚀和高温氧化的碳化硅陶瓷焊接件及其制备方法和应用，该方法是将Al2O3、MgO、CaO、HfO2、Nd2O3和SiO2粉体球磨混合，在1600～1700℃水淬得到玻璃，经研磨细化和过筛，得到玻璃粉体，将玻璃粉体经干压成型，得到玻璃生坯，将玻璃块体放置于两个SiC陶瓷的待焊接区域，然后将两个SiC陶瓷按照待成型产品的构造放置，得到待连接组件，将待连接组件放入加热炉中经机械压力，在保护气氛中在1350～1600℃进行热处理，得到碳化硅陶瓷焊接件。该碳化硅陶瓷焊接件具有良好的耐水热腐蚀和高温氧化性能，可应用在高温换热和核能领域。
Hydrothermal-corrosion-resistant and high-temperature-oxidation-resistant silicon carbide ceramic weldment as well as preparation method and application thereof
一种耐水热腐蚀和高温氧化的碳化硅陶瓷焊接件及其制备方法和应用
GUO WEIMING (author) / ZHAN CHUANGTIAN (author) / HUANG KUNHENG (author) / HE SHENGJIN (author) / CHEN XIUBING (author) / ZHOU HUAN (author) / ZHANG ZEXI (author) / LIN HUATAI (author)
2024-04-30
Patent
Electronic Resource
Chinese
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