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A multi-component high-temperature solder

A high-temperature brazing material and multi-component technology, applied in the direction of welding/cutting media/materials, welding media, manufacturing tools, etc., can solve the problems of low creep strength, low service temperature, poor wettability, etc., to improve corrosion resistance , Improve oxidation resistance, improve the effect of high temperature creep strength

Active Publication Date: 2017-06-06
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a multi-element high-temperature solder in order to solve the technical problems of low service temperature, low creep strength and poor wettability of the existing high-temperature solder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0013] Specific embodiment 1: This embodiment is a multi-element high temperature brazing filler metal, which is composed of the following components in terms of mass percentage: 25%-35% Pt, 0.01%-1.0% Co, 0.01%-1.5% Ti, 0.01% ~1.5% of Zr, 0.01% to 1.5% of Ni, 0.01% to 3.5% of Cr, 0.01% to 1.5% of V, 0.02% to 1.5% of mixed RE, the rest is Cu; the mixed RE is composed of The rare earth Nd and Y mixed composition, the mass ratio of Y to Nd is 1:1.5.

specific Embodiment approach 2

[0014] The second embodiment: The difference between this embodiment and the first embodiment is: the multi-element high-temperature brazing filler metal is composed of the following components according to mass percentage: 27% Pt, 0.5% Co, 1.0% Ti, 0.9% Zr, 1.0% Ni, 1.8% Cr, 1.2% V, 1.5% mixed RE, and the rest is Cu; the mixed RE is composed of rare earth Nd and Y, and the mass ratio of Y to Nd is 1:1.5. Others are the same as the first embodiment.

specific Embodiment approach 3

[0015] Specific embodiment three: The difference between this embodiment and specific embodiment one or two is: the multi-element high temperature brazing filler metal is composed of the following components according to mass percentage: 32% Pt, 0.9% Co, 0.5% Ti, 0.4% Zr, 1.3% Ni, 3.0% Cr, 1.0% V, 1.5% mixed RE, and the rest is Cu; the mixed RE is composed of rare earth Nd and Y, and the mass ratio of Y to Nd is 1: 1.5. Others are the same as the first or second embodiment.

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PUM

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Abstract

The invention discloses multi-element high-temperature brazing filler metal, and relates to high-temperature brazing filler metal. The multi-element high-temperature brazing filler metal aims at solving the technical problems that existing high-temperature brazing filler metal is low in using temperature, low in anti-creep strength and poor in wettability. The multi-element high-temperature brazing filler metal is composed of Pt, Co, Ti, Zr, Ni, Cr, V, mixed RE and Cu; and the mixed RE is formed by mixing rare earth Nd and Y. The multi-element high-temperature brazing filler metal has the beneficial effects that active elements such as Ti, Zr and V are added so that wetting of the brazing filler metal on base metal can be promoted; compared with common Ag-34.5Cu-1.5Ti brazing filler metal, the using temperature is increased; and the wetting angle of the multi-element high-temperature brazing filler metal is reduced. According to the multi-element high-temperature brazing filler metal, the Co and the Ni are added to improve the high-temperature anti-creep strength of the brazing filler metal; the Cr is added so that the oxidation resistance of the brazing filler metal can be better improved; and rare earth elements Nd and Y are added so that the texture of the brazing filler metal can be more even, and the resistance to corrosion of the brazing filler metal can be improved. The multi-element high-temperature brazing filler metal is applied to the welding filed.

Description

Technical field [0001] The invention relates to a high-temperature solder. Background technique [0002] Active brazing, as an economical and reliable connection method, plays an extremely important role in the preparation of ceramic / metal components, and has been widely used in aerospace, military industry, automotive and other fields. This connection technology is mainly through the chemical reaction between the active elements in the liquid solder and the ceramic matrix during the brazing process to promote the spread and wetting of the liquid solder on the ceramic surface and form a dense and continuous interface reaction layer. Compatibility enables effective connection. [0003] In the past two decades, many brazing ceramic brazing filler metals have been developed. Among them, Ti-containing active brazing filler metals have been extensively studied, especially Ag-Cu-Ti active brazing filler metals. It has been discovered that the use of Ag-Cu-Ti The joints obtained by braz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30C22C9/00B23K35/40
CPCB23K35/0244B23K35/025B23K35/302B23K35/40C22C9/00
Inventor 林铁松何鹏赵万祺
Owner HARBIN INST OF TECH