A kind of silver-based solder alloy and its preparation method, the preparation method of foil strip material and wire material

A silver-based solder and alloy technology, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of inconsistent melting point and high welding temperature of alloy solder, so as to ensure spattering and improve burnout rate , The effect of the process equipment is simple and easy to operate
CN112059468BActive Publication Date: 2021-12-24KUNMING INST OF PRECIOUS METALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING INST OF PRECIOUS METALS
Publication Date
2021-12-24

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Abstract

The invention discloses a silver-based solder alloy, which comprises: Cu, 26-28%; Ga, 3.5-5.5%; at least two of the following elements: Ni, 0.001-0.5%; Co, 0.001- 0.5%; Fe, 0.001-0.5%; at least one of the following elements: Au, 0.001-0.5%; Pt, 0.001-0.5%; Pd, 0.001-0.5%; at least one of the following elements: In, 0.001-0.5% %; Sn, 0.001-0.5%; at least one of the following elements: La, Ce, Pr, Nd, Sm, Eu, Er, Yb, Y and Sc; the balance is Ag. The invention further provides a preparation method of silver-based solder alloy and a preparation method of foil strip and wire. The silver-based solder alloy of the present invention saves the nickel-plating process in welding vacuum electronic devices, preventing it from polluting the environment; at the same time, it solves the problems that the welding temperature of the Ag-28Cu-xNi alloy is high and the melting point is inconsistent; the solder The material alloy brazing process is good, has good wettability, the brazing rate of Kovar alloy, stainless steel, etc. is higher than 95%, and the shear strength of the brazed joint is σ b ≥285MPa.
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Description

technical field

[0001] The invention belongs to the technical field of brazing materials, and in particular relates to a silver-based brazing material alloy and a preparation method thereof, as well as a preparation method of foil strips and wires, which are used for welding components of vacuum electronic devices. Background technique

[0002] Compared with other vacuum solders for vacuum electronic devices, silver-based solders have become the most widely used brazing materials in production and application due to their extremely high cost performance and unparalleled advantages, and have also become widely recognized as a suitable vacuum solder. Excellent material for electronic sealing. Silver-based solder has a moderate melting point, good manufacturability, good airtightness of welded joints, and good strength, toughness, electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in electronics, electrical engineering, electrical applianc...

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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