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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[0032] Example 1
[0033] 3 kg D15*4 sintered NdFeB permanent magnet material was polished in a vibrating mill for 3 hours. Use 10L degreasing agent, its composition is sodium phosphate 30g / liter, sodium carbonate 8g / liter and sodium hydroxide 8g / liter. After degreasing and degreasing the neodymium iron boron permanent magnet material, it is removed by pickling with 5% nitric acid solution The oxide on the surface of the neodymium iron boron permanent magnet material is then washed 3 times with water. Then use 5% sulfuric acid solution to activate the neodymium iron boron permanent magnet material, then electroplating, put the pretreated neodymium iron boron permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution It is: 20 grams / liter of stannous chloride, 20 grams / liter of nickel chloride hexahydrate, 180 grams / liter of potassium pyrophosphate, 4ml / L of ammonia, 15 grams / liter of aminoacetic acid, 2 grams of...
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[0034] Example 2
[0035] 3 kg D15*4 sintered NdFeB permanent magnet material was polished in a vibrating mill for 3 hours. Use 10L degreasing agent, its composition is sodium phosphate 30g / liter, sodium carbonate 8g / liter and sodium hydroxide 8g / liter. After degreasing and degreasing the neodymium iron boron permanent magnet material, it is removed by pickling with 5% nitric acid solution The oxide on the surface of the neodymium iron boron permanent magnet material is then washed 3 times with water. Then use 5% sulfuric acid solution to activate the neodymium iron boron permanent magnet material, then electroplating, put the pretreated neodymium iron boron permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution It is: stannous chloride 30g / l, nickel chloride hexahydrate 30g / l, potassium pyrophosphate 200g / l, ammonia water 6ml / L, aminoacetic acid 20g / l, complexing agent ethylenediamine 4g / l Rise. When elec...
Example Embodiment
[0036] Example 3
[0037] 3 kg D15*4 sintered NdFeB permanent magnet material was polished in a vibrating mill for 3 hours. Use 10L degreasing agent, its composition is sodium phosphate 30g / liter, sodium carbonate 8g / liter and sodium hydroxide 8g / liter. After degreasing and degreasing the neodymium iron boron permanent magnet material, it is removed by pickling with 5% nitric acid solution The oxide on the surface of the neodymium iron boron permanent magnet material is then washed 3 times with water. Then use 5% sulfuric acid solution to activate the neodymium iron boron permanent magnet material, then electroplating, put the pretreated neodymium iron boron permanent magnet material into the tin-nickel alloy plating solution, the composition of the tin-nickel alloy plating solution It is: 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 ethylene diamine 6 g / l When electroplating...
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