Tin-nickel alloy plating solution used for plating neodymium iron boron permanent magnet material and method for plating neodymium iron boron permanent magnet material by adopting same
A technology of permanent magnet material and tin-nickel alloy is applied in the field of tin-nickel alloy plating solution, and the tin-nickel alloy plating solution is used for electroplating tin-nickel alloy on neodymium iron boron permanent magnet material, which can solve the problems of complicated process and reduce the operation process. , The effect of saving nickel metal and reducing thickness
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Embodiment 1
[0033] 3 kg of D15*4 sintered NdFeB permanent magnet materials were polished in a vibration mill for 3 hours. Use 10L degreasing agent, which is composed of 30g / liter sodium phosphate, 8g / liter sodium carbonate and 8g / liter sodium hydroxide. After degreasing and degreasing NdFeB permanent magnet materials, pickle them with 5% nitric acid solution The oxide on the surface of the NdFeB permanent magnet material is then washed with water for 3 times. Then use 5% sulfuric acid solution to activate the NdFeB permanent magnet material, then carry out electroplating, put the above-mentioned pretreated NdFeB permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution For: stannous chloride 20 g / L, nickel chloride hexahydrate 20 g / L, potassium pyrophosphate 180 g / L, ammonia water 4ml / L, glycine 15 g / L, complexing agent ethylenediamine 2 g / Lift,. When electroplating, the temperature of the tin-nickel alloy plating sol...
Embodiment 2
[0035]3 kg of D15*4 sintered NdFeB permanent magnet materials were polished in a vibration mill for 3 hours. Use 10L degreasing agent, which is composed of 30g / liter sodium phosphate, 8g / liter sodium carbonate and 8g / liter sodium hydroxide. After degreasing and degreasing NdFeB permanent magnet materials, pickle them with 5% nitric acid solution The oxide on the surface of the NdFeB permanent magnet material is then washed with water for 3 times. Then use 5% sulfuric acid solution to activate the NdFeB permanent magnet material, then carry out electroplating, put the above-mentioned pretreated NdFeB permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution For: stannous chloride 30 g / L, nickel chloride hexahydrate 30 g / L, potassium pyrophosphate 200 g / L, ammonia water 6ml / L, glycine 20 g / L, complexing agent ethylenediamine 4 g / L Lift. When electroplating, the temperature of the tin-nickel alloy plating solu...
Embodiment 3
[0037] 3 kg of D15*4 sintered NdFeB permanent magnet materials were polished in a vibration mill for 3 hours. Use 10L degreasing agent, which is composed of 30g / liter sodium phosphate, 8g / liter sodium carbonate and 8g / liter sodium hydroxide. After degreasing and degreasing NdFeB permanent magnet materials, pickle them with 5% nitric acid solution The oxide on the surface of the NdFeB permanent magnet material is then washed with water for 3 times. Then use 5% sulfuric acid solution to activate the NdFeB permanent magnet material, then carry out electroplating, put the above-mentioned pretreated NdFeB permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution For: stannous chloride 40 g / L, nickel chloride hexahydrate 40 g / L, potassium pyrophosphate 220 g / L, ammonia water 8ml / L, glycine 25 g / L, complexing agent ethylenediamine 6 g / L When performing electroplating, the temperature of the tin-nickel alloy plating...
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