Chemical plating silver copper powder, chemical plating liquid and chemical plating method
A technology of chemical silver plating and copper powder, which is applied in the direction of liquid chemical plating, coating, metal material coating process, etc., can solve the problem of repeated silver plating, poor stability of plating solution, and affecting the oxidation resistance of silver-plated copper powder , conductivity and other issues, to achieve the effect of uniform distribution of silver layer, increase of silver coating rate and high binding force
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Embodiment 1
[0026] Example 1: Put 15g of copper powder into a glass container, add a certain amount of absolute ethanol, and stir for 1 hour with a temperature-controlled magnetic stirrer. Wash the copper powder with distilled water for 2 times, then wash the copper powder with 3% dilute HCl, and then wash the copper powder with distilled water for 3 times. Copper powder is put into the sensitization solution (stannous chloride 10g / L; Hydrochloric acid 30g / L; Distilled water surplus) container that places ultrasonic generator to carry out sensitization treatment, ultrasonic frequency is 40kHz, ultrasonic power is 110W, temperature The temperature is 20°C, the sensitization time is 5min, and the copper powder is washed twice with distilled water. Copper powder is put into the activation solution (palladium chloride 0.5g / L; Hydrochloric acid 25g / L; Distilled water surplus) container that places ultrasonic generator and carry out activation treatment, ultrasonic frequency is 40kHz, ultrasoni...
Embodiment 2
[0027] Example 2: Put 15g of copper powder into a glass container, add a certain amount of absolute ethanol, and stir for 1 hour with a temperature-controlled magnetic stirrer. Wash the copper powder with distilled water for 2 times, then wash the copper powder with 3% dilute HCl, and then wash the copper powder with distilled water for 3 times. Copper powder is put into the sensitization solution (stannous chloride 12g / L; Hydrochloric acid 30g / L; Distilled water surplus) container that places ultrasonic generator to carry out sensitization treatment, ultrasonic frequency is 40kHz, ultrasonic power is 110W, temperature The temperature is 20°C, the sensitization time is 5min, and the copper powder is washed twice with distilled water. Copper powder is put into the activation solution (palladium chloride 0.5g / L; Hydrochloric acid 25g / L; Distilled water surplus) container that places ultrasonic generator and carry out activation treatment, ultrasonic frequency is 40kHz, ultrasoni...
Embodiment 3
[0028] Example 3: Put 30 g of copper powder into a glass container, add a certain amount of absolute ethanol, and stir with a temperature-controlled magnetic stirrer for 1 hour. Wash the copper powder with distilled water for 2 times, then wash the copper powder with 3% dilute HCl, and then wash the copper powder with distilled water for 3 times. Copper powder is put into the sensitization solution (stannous chloride 15g / L; Hydrochloric acid 40g / L; Distilled water surplus) container that places ultrasonic generator and carry out sensitization treatment, ultrasonic frequency is 40kHz, ultrasonic power is 110W, temperature The temperature is 20°C, the sensitization time is 5min, and the copper powder is washed twice with distilled water. Copper powder is put into the activation solution (palladium chloride 0.8g / L; Hydrochloric acid 30g / L; Distilled water surplus) container that places ultrasonic generator and carry out activation treatment, ultrasonic frequency is 40kHz, ultrasoni...
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