Cadmium-free silver solder containing gallium, indium, and rare earth neodymium and cerium
A technology of silver solder and rare earth, applied in the direction of welding/cutting medium/material, welding medium, manufacturing tools, etc., to achieve the effect of eliminating pollution and protecting body safety
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Embodiment 1
[0010] According to the proportion by mass percentage, its composition is: 30.0% copper (Cu), 32.0% zinc (Zn), 1.0% tin (Sn), 0.1% gallium (Ga), 0.1% indium (In), 0.10% neodymium (Nd ), 0.10% cerium (Ce), and the rest is silver (Ag).
[0011] The solidus temperature of the "cadmium-free silver solder containing gallium, indium, rare earth neodymium and cerium" obtained from the above composition ratio is about 690°C, and the liquidus temperature is about 770°C (experimental error is considered), and FB102 ( QJ102) brazing flux, brazing joint strength when the brazing base metal is the following combination, see the data in brackets: copper - brass (σ b =170±15MPa, τ=170±10MPa), brass-carbon steel (σ b =260±15MPa, τ=200±10MPa), stainless steel-nickel-based alloy (σ b =300±15MPa, τ=230±10MPa).
Embodiment 2
[0013] According to the proportion by mass percentage, its composition is: 40.0% copper (Cu), 28.0% zinc (Zn), 0.01% tin (Sn), 2.0% gallium (Ga), 2.0% indium (In), 0.001% neodymium (Nd ), 0.001% cerium (Ce), and the rest is silver (Ag).
[0014] The solidus temperature of the "cadmium-free silver solder containing gallium, indium, rare earth neodymium and cerium" obtained by the above-mentioned composition ratio is about 680°C, and the liquidus temperature is about 755°C (experimental error is considered), and FB102 ( QJ102) brazing flux, brazing joint strength when the brazing base metal is the following combination, see the data in brackets: copper - brass (σ b =170±15MPa, τ=170±10MPa), brass-carbon steel (σ b =260±15MPa, τ=200±10MPa), stainless steel-nickel-based alloy (σ b =300±15MPa, τ=230±10MPa).
Embodiment 3
[0016] According to the proportion by mass percentage, its composition is: 35.0% copper (Cu), 30.0% zinc (Zn), 1.0% tin (Sn), 1.0% gallium (Ga), 1.0% indium (In), 0.001% neodymium (Nd ), 0.001% cerium (Ce), and the rest is silver (Ag).
[0017] The solidus temperature of the "cadmium-free silver solder containing gallium, indium, rare earth neodymium and cerium" obtained by the above-mentioned composition ratio is about 680°C, and the liquidus temperature is about 755°C (experimental error is considered), and FB102 ( QJ102) brazing flux, base metal for brazing and brazing seam strength data are identical with embodiment 1.
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