NdFeB Plating Difficulties

1.The chemical activity in the material is extremely strong

Neodymium iron boron parts even when in contact with water will produce hydrogen and corrosion,so:

①The use of acid and alkali before plating treatment should not be too strong, otherwise the material matrix is susceptible to corrosion, and the reaction between chlorine and hydrazine in hydrochloric acid is strong, avoid using hydrochloric acid.

NdFeB Plating Difficulties

NdFeB Plating Difficulties

②Pre-plating or direct plating when selecting a simple salt bath (such as Watts nickel, potassium chloride galvanized), easy to oxidize the parts and affect the binding of the coating and the substrate, and the parts are subject to corrosion and contamination of the bath

2. NdFeB magnets are magnetic functional materials

Metal plating will affect its magnetic properties, so how to coordinate the type, combination, and thickness of the plating (the several properties related to corrosion resistance of the plating) and the magnetic properties of the product are the difficulties in the electroplating of NdFeB.

3. The surface of NdFeB magnets is porous, rough and uneven

①Surface dirt is not easy to clean, the burden of pre-plating treatment

②Pre-plating or direct plating can not select the complex plating solution with good bonding strength and good corrosion resistance (due to the low current efficiency of complex plating solution, it is not easy to deposit on the surface of porous parts), such as alkali copper, alkali zinc, etc.

4. NdFeB material brittle and Surface is vulnerable

①Workers are more difficult to operate

②It is difficult to choose a large-sized roller (otherwise the parts will turn violently and easily bumped), which will affect the improvement of labor productivity.

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