Preparation method for Sn based composite solder sheets
A composite welding and sheet technology, applied in welding equipment, welding/cutting media/materials, welding media, etc., can solve the problems of poor high-temperature service performance, low joint strength, low efficiency, etc., to ensure fluidity, improve Effects of strength and high temperature stability
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Embodiment 1
[0026] The metal foam matrix selected in this embodiment is copper foam and nickel foam with a porosity of 98%, and the solder is pure Sn. The specific operation steps are as follows:
[0027] After the copper foam and nickel foam with a size of 10mm×10mmx0.5mm are degreased and decontaminated, they are cleaned with ultrasonic cleaning and deionized water for 5 minutes each; the treated foamed copper is immersed in molten pure tin, and the temperature of the molten tin is 260°C for 10s, the copper foam reinforced tin-based composite solder sheet was obtained; similarly, the surface-treated foamed nickel metal was immersed in molten tin, the temperature of the molten tin was 260°C, and the time of immersion in the molten tin was 15s. Nickel Foam Reinforced Tin-Based Composite Solder Sheet. Select 3 pieces of Sn-based solder sheets reinforced with copper foam and 2 pieces of Sn-based composite solder sheets reinforced with nickel foam with a relatively uniform surface, stack the...
Embodiment 2
[0030] The metal foam matrix selected in this embodiment is copper foam and nickel foam with a porosity of 60%, and the solder is pure Sn. The specific operation steps are as follows:
[0031] After the copper foam and nickel foam with a size of 10mm×10mmx0.5mm are degreased and decontaminated, they are cleaned with ultrasonic cleaning and deionized water for 5 minutes each; the treated foamed copper is immersed in molten pure tin, and the temperature of the molten tin is 260°C for 10s, the copper foam reinforced tin-based composite solder sheet was obtained; similarly, the surface-treated foamed nickel metal was immersed in molten tin, the temperature of the molten tin was 260°C, and the time of immersion in the molten tin was 15s. Nickel Foam Reinforced Tin-Based Composite Solder Sheet. Select 3 pieces of Sn-based solder sheets reinforced with copper foam and 2 pieces of Sn-based composite solder sheets reinforced with nickel foam with a relatively uniform surface, stack the...
Embodiment 3
[0034] The metal foam matrix selected in this embodiment is copper foam and nickel foam with a porosity of 98%, and the solder is a Sn-Ag alloy. The specific operation steps are as follows:
[0035] After the copper foam and nickel foam with a size of 10mm×10mmx0.5mm are degreased and decontaminated, they are cleaned with ultrasonic cleaning and deionized water for 5 minutes each; the treated foamed copper is immersed in molten pure tin, and the temperature of the molten tin is 260°C for 10s, the copper foam reinforced tin-based composite solder sheet was obtained; similarly, the surface-treated foamed nickel metal was immersed in molten tin, the temperature of the molten tin was 260°C, and the time of immersion in the molten tin was 15s. Nickel Foam Reinforced Tin-Based Composite Solder Sheet. Select 3 pieces of Sn-based solder sheets reinforced with copper foam and 2 pieces of Sn-based composite solder sheets reinforced with nickel foam with a relatively uniform surface, sta...
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