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Self-fluxing silver solder containing neodymium, zirconium and gallium

A technology of self-brazing and silver solder, which is applied in the direction of welding/cutting media/materials, welding media, metal processing equipment, etc. It can solve problems such as inability to clean or remove, decline in electrical properties of solder joints, and unsatisfactory brazing. , to achieve good plasticity and comprehensive mechanical properties, high solder joint strength, and good self-brazing performance

Active Publication Date: 2013-07-24
ZHEJIANG XINRUI WELDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Currently used BAg65CuZn and BAg60CuZn solders, because their chemical composition only contains Ag, Cu, and Zn elements, although they have excellent brazing performance when combined with flux (such as FB102 flux), they cannot satisfy many special brazing structures and special soldering materials. The shape and special size (such as the tiny contacts of micro-miniature electrical components) need to be brazed. After the brazing is completed, the "flux residue" left by the solder joints of this kind of "packaged" device is inside the packaged device, which cannot to clean or remove
If the "flux residue" is not removed, it will lead to a decrease in the electrical properties of the solder joints or even a short circuit of the solder joints

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] 45.0% Ag, 13.0% Zn, 1.0% P, 0.01% Nd, 0.01% Zr, 0.001% Ga, and the rest is Cu. The "self-brazing silver solder containing neodymium, zirconium and gallium" obtained by the above composition ratio is flame brazing without using flux, and the brazing seam strength when the brazing base material is the following combination is shown in the data in brackets: red copper - Brass (σ b =210±25MPa, τ=200±30MPa), copper-nickel-based alloy (σ b =210±25MPa, τ=200±30MPa), brass-nickel-based alloy (σ b =330±25MPa, τ=325±30MPa), brazing with BAg65CuZn, BAg60CuZn solder with flux (such as FB102 flux) when brazing copper-brass, copper-nickel-based alloy, brass-nickel-based alloy The mechanical properties of the joints are equivalent.

specific Embodiment approach 2

[0019] 62.0% Ag, 9.0% Zn, 3.0% P, 0.001% Nd, 0.001% Zr, 0.01% Ga, and the rest is Cu. The "self-brazing silver solder containing neodymium, zirconium and gallium" obtained by the above composition ratio is flame brazing without using flux, and the brazing seam strength when the brazing base material is the following combination is shown in the data in brackets: red copper - Brass (σ b =210±25MPa, τ=200±30MPa), copper-nickel-based alloy (σ b =210±25MPa, τ=200±30MPa), brass-nickel-based alloy (σ b =330±25MPa, τ=325±30MPa), brazing with BAg65CuZn, BAg60CuZn solder with flux (such as FB102 flux) when brazing copper-brass, copper-nickel-based alloy, brass-nickel-based alloy The mechanical properties of the joints are equivalent.

specific Embodiment approach 3

[0020] 50.0% Ag, 12.0% Zn, 2.0% P, 0.01% Nd, 0.005% Zr, 0.008% Ga, and the rest is Cu. The "self-brazing silver solder containing neodymium, zirconium and gallium" obtained by the above composition ratio is flame brazing without using flux, and the brazing seam strength when the brazing base material is the following combination is shown in the data in brackets: red copper - Brass (σ b =210±25MPa, τ=200±30MPa), copper-nickel-based alloy (σ b =210±25MPa, τ=200±30MPa), brass-nickel-based alloy (σ b =330±25MPa, τ=325±30MPa), brazing with BAg65CuZn, BAg60CuZn solder with flux (such as FB102 flux) when brazing copper-brass, copper-nickel-based alloy, brass-nickel-based alloy The mechanical properties of the joints are equivalent.

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PUM

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Abstract

The invention relates to a self-fluxing silver solder containing neodymium, zirconium and gallium. The self-fluxing silver solder is characterized by comprising the following components in percentage by mass: 45.0 to 62.0 percent of Ag, 9.0 to 13.0 percent of Zn, 1.0 to 3.0 percent of P, 0.001 to 0.01 percent of Nd, 0.001 to 0.01 percent of Zr, 0.001 to 0.01 percent of Ga and the balance of Cu. The self-fluxing silver solder is particularly suitable for welding microminiature contacts of microminiature electrical appliance components without use of a soldering flux, so that the problem of cleaning welding spots of the complex electrical appliance components difficultly is solved.

Description

technical field [0001] The invention relates to a self-brazing silver solder, in particular to a silver solder with good fluidity and wettability, high solder joint strength, which can replace existing solder such as BAg65CuZn and BAg60CuZn, and is suitable for welding micro The micro-miniature contacts of small electrical components do not need to use flux, and the silver solder with "self-brazing performance" belongs to the brazing material of metal materials. Background technique [0002] The currently used BAg65CuZn and BAg60CuZn solders, because their chemical composition only contains Ag, Cu, and Zn elements, although they have excellent brazing performance when combined with flux (such as FB102 flux), they cannot satisfy many special brazing structures and special soldering materials. The shape and special size (such as the tiny contacts of micro-miniature electrical components) need to be soldered. After the brazing is completed, the "flux residue" remaining in the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30
Inventor 薛鹏薛松柏
Owner ZHEJIANG XINRUI WELDING MATERIAL
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