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Silicon carbide ceramic connecting piece as well as preparation method and application thereof
The invention belongs to the technical field of ceramic welding, and discloses a silicon carbide ceramic connecting piece and a preparation method and application thereof.The method comprises the steps that polysilazane, carbon powder, silicon powder and hafnium oxide powder serve as raw materials, a solvent is added, and a solder is prepared through roller ball milling and mixing; the method comprises the following steps: heating silicon carbide ceramics in a water bath at 90-95 DEG C by using a mixed solution of hydrofluoric acid and nitric acid, coating welding flux on to-be-welded areas of the two silicon carbide ceramics, and then placing the two silicon carbide ceramics according to the structure of a to-be-formed product to obtain a to-be-connected assembly; and the to-be-welded part of the to-be-connected assembly is put into a heating furnace, welding treatment is conducted in the nitrogen atmosphere, and the silicon carbide ceramic connecting piece is obtained after cooling. The thickness of the connecting layer of the silicon carbide ceramic connecting piece is 5-50 microns, and the silicon carbide ceramic connecting piece can be applied to the high-temperature heat exchange field and the space field.
本发明属于陶瓷焊接技术领域，公开了一种碳化硅陶瓷连接件及其制备方法和应用，该方法以聚硅氮烷、碳粉、硅粉和氧化铪粉体为原材料，加入溶剂，辊球磨混合制备焊料；用氢氟酸和硝酸的混合液对碳化硅陶瓷在90～95℃水浴加热处理，将焊料涂敷于两个碳化硅陶瓷的待焊接区域，然后将两个碳化硅陶瓷按照待成型产品的构造放置，得到待连接组件；将待连接组件的待焊接部位放入加热炉中，在氮气气氛下进行焊接处理，冷却后得到碳化硅陶瓷连接件。所述碳化硅陶瓷连接件的连接层厚度为5～50μm，可在高温换热领域和空间领域的应用。
Silicon carbide ceramic connecting piece as well as preparation method and application thereof
The invention belongs to the technical field of ceramic welding, and discloses a silicon carbide ceramic connecting piece and a preparation method and application thereof.The method comprises the steps that polysilazane, carbon powder, silicon powder and hafnium oxide powder serve as raw materials, a solvent is added, and a solder is prepared through roller ball milling and mixing; the method comprises the following steps: heating silicon carbide ceramics in a water bath at 90-95 DEG C by using a mixed solution of hydrofluoric acid and nitric acid, coating welding flux on to-be-welded areas of the two silicon carbide ceramics, and then placing the two silicon carbide ceramics according to the structure of a to-be-formed product to obtain a to-be-connected assembly; and the to-be-welded part of the to-be-connected assembly is put into a heating furnace, welding treatment is conducted in the nitrogen atmosphere, and the silicon carbide ceramic connecting piece is obtained after cooling. The thickness of the connecting layer of the silicon carbide ceramic connecting piece is 5-50 microns, and the silicon carbide ceramic connecting piece can be applied to the high-temperature heat exchange field and the space field.
本发明属于陶瓷焊接技术领域，公开了一种碳化硅陶瓷连接件及其制备方法和应用，该方法以聚硅氮烷、碳粉、硅粉和氧化铪粉体为原材料，加入溶剂，辊球磨混合制备焊料；用氢氟酸和硝酸的混合液对碳化硅陶瓷在90～95℃水浴加热处理，将焊料涂敷于两个碳化硅陶瓷的待焊接区域，然后将两个碳化硅陶瓷按照待成型产品的构造放置，得到待连接组件；将待连接组件的待焊接部位放入加热炉中，在氮气气氛下进行焊接处理，冷却后得到碳化硅陶瓷连接件。所述碳化硅陶瓷连接件的连接层厚度为5～50μm，可在高温换热领域和空间领域的应用。
Silicon carbide ceramic connecting piece as well as preparation method and application thereof
一种碳化硅陶瓷连接件及其制备方法和应用
GUO WEIMING (author) / ZHAN CHUANGTIAN (author) / HE SHENGJIN (author) / ZHANG ZEXI (author) / CHEN XIUBING (author) / SU LINGFENG (author) / LIN HUATAI (author)
2023-03-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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