High-temperature brazing filler metal

A technology of high-temperature solder and mass percentage, which is applied in the direction of welding/cutting medium/material, welding medium, casting melt container, etc., and can solve the problem of low shear strength of joints
CN101653884AActive Publication Date: 2010-02-24HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2010-02-24
Patent Text Reader

Abstract

The invention discloses a high-temperature brazing filler metal, relating to a brazing filler metal. The invention solves the problem that joints obtained by using the prior brazing filler composite material have low shearing strength. The brazing filler metal comprises Ti or TiH2, Ni and Nb. When the high-temperature brazing filler material is used to braze C / SiC composite material and the brazing joint of the C / SiC composite material, room temperature three-point bending strength reaches 50MPa-71MPa, and the room temperature shearing strength of the brazing joint of the C / SiC composite material and metal reaches 90MPa-180MPa, moreover, the retention rate of the 800 DEG C high-temperature shearing strength of the brazing joint is more than 69% and the retention rate of the 800 DEG C high-temperature shearing strength is more than 42%. When the high-temperature brazing filler material is used to braze black lead and the joint of Nb, the room temperature shearing strength reaches 30MPa-60MPa.
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Description

technical field

[0001] The invention relates to a solder. Background technique

[0002] The chemical activity of the composite material is low, and it is difficult for the conventional solder to wet its surface. The existing method uses Ag-Cu-Ti active solder to carry out active brazing of the C / SiC composite material and the Ti alloy, and the obtained C / SiC after brazing The room temperature shear strength of the joint between SiC composite material and Ti alloy is 84MPa~160MPa, and the shear strength of the joint at 500°C is 51MPa~104MPa. The use temperature of the joint obtained by this method is below 500°C, and the Ag-Cu-Ti active solder The use temperature of the material is 400℃~500℃. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-temperature solder to solve the problem of low shear strength of joints obtained by brazing composite materials using the existing solder.

[0004] The high-temperature...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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