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Pd-Co-Pt-based high-temperature solder for brazing Cf/SiC composite material

A high-temperature brazing filler metal and composite material technology, applied in welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems of poor processing performance, weak thermal shock resistance, large manufacturing size, etc., and improve high-temperature performance. , high-strength effect

Active Publication Date: 2012-06-27
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

However, due to the poor processability of ceramic materials, weak thermal shock resistance, and the difficulty of manufacturing parts with large sizes and complex shapes, it is usually necessary to form a composite structure with metal materials for application, or to realize complex components through the connection of ceramics themselves. manufacturing

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  • Pd-Co-Pt-based high-temperature solder for brazing Cf/SiC composite material

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Embodiment Construction

[0007] The composition weight percent of the brazing filler metal is: Co 21.0-32.0, Au: 8.0-22.0, Cu 0.0-4.0, Ni: 0.0-7.0, V: 4.5-15.0, and the balance of Pd.

[0008] The composition and weight percentage of the brazing material can also be: Co 21.0-32.0, Au: 8.0-22.0, Ni: 0.0-7.0, V: 4.5-15.0, and the balance of Pd.

[0009] The composition and weight percentage of the brazing material can also be: Co 21.0-32.0, Au: 8.0-22.0, Ni: 1.0-7.0, V: 4.5-15.0, and the balance of Pd.

[0010] The method for preparing the above-mentioned high-temperature brazing filler metal is to firstly melt the alloy raw material into an alloy ingot by using an arc melting method under the protection of argon; then use one of the following methods to prepare the brazing filler metal:

[0011] (1) adopting argon atomization powder making equipment to prepare powdery solder;

[0012] (2) Under the protection condition of argon gas, the quenched foil strip brazing material is prepared by adopting the ...

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Abstract

The invention relates to Pd-Co-Pt-based high-temperature solder for brazing a Cf / SiC composite material. The solder comprises the following components in percentage by weight: 21.0-30.0 percent of Co, 8.0-22.0 percent of Au, 0.0-4.0 percent of Cu, 0.0-7.0 percent of Ni, 4.5-15.0 percent of V and the balance of Pd. The solder of the invention obtains a Cf / SiC ceramic-based composite material connecting joint at a brazing temperature of 1110-1200 DEG C and has the room-temperature three-point bending strength corresponding to a brazing joint up to 110-160 MPa. The solder is not only suitable for brazing the Cf / SiC ceramic-based composite material, but also suitable for connecting combined joints of the ceramics (or composite materials) with other ceramic materials (or composite materials) or metal materials.

Description

technical field [0001] The invention belongs to the technical field of welding, and relates to a f Palladium-cobalt-gold-based high-temperature solder for brazing of / SiC composite materials. Background technique [0002] Ceramics and ceramic matrix composites are promising high-temperature structural ceramic materials. However, due to the poor processability of ceramic materials, weak thermal shock resistance, and the difficulty of manufacturing parts with large sizes and complex shapes, it is usually necessary to form a composite structure with metal materials for application, or to realize complex components through the connection of ceramics themselves. manufacturing. [0003] At home and abroad on carbon fiber reinforced silicon carbide ceramic matrix composites (C f / SiC) connection research, publicly reported using AgCuTi solder (see "Material Science and Technology", vol.17, Supplement 1, 2009, p1-4, authors: Chen Bo, Xiong Huaping, Cheng Yaoyong, Mao Wei,) ; Ni-...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30
Inventor 熊华平陈波李晓红毛唯
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS