| 摘要 |
PURPOSE: A phosphorus-free electroless nickel plating solution and an electroless plating method using the same are provided to reduce the costs for wastewater treatment by not using hypophosphorous acid soda as reductant. CONSTITUTION: A phosphorus-free electroless nickel plating solution comprises nickel salt, dimethylamine borane and boric acid as reducing agent, ammonium acetic acid as complexing agent, and sodium citrate as stabilizer. The nickel salt comprises nickel sulfate of 20-35g/l and nickel sulfate ammonium of 0.1-5g/l to nickel plating solution of 1 liter. The reducing agent comprises dimethylamine borane of 3-10g/l and boric acid of 20-30g/l to nickel plating solution of 1 liter. The complexing agent comprises ammonium acetic acid 5-15g/l to nickel plating solution of 1 liter. The stabilizer comprises sodium citrate of 10-20g/l to nickel plating solution of 1 liter.
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