What is the matter with nickel on one side and no nickel on copper products?

1 Plating burns.

Possible causes of coating burns: insufficient boric acid, low concentration of metal salts, too low operating temperature, too high current density, too high pH, or insufficient agitation.

2 Low deposition rate.

Low pH or low current density can result in low deposition rates.

If the copper plating is not activated to remove the oxide layer, the adhesion between the copper and nickel will be poor, and the coating will peel off. If the current is interrupted, it may cause the nickel plating to peel off itself; If the temperature is too low, it will also cause flaking.

3. The coating is brittle and has poor weldability.

When the coating is bent or subjected to some degree of wear, the brittleness of the coating is often revealed, indicating the presence of organic or heavy metal contamination. Too many additives increase the number of organic matter and decomposition products entrained in the coating, which is the main source of organic pollution, and can be treated with activated carbon; Heavy metal impurities can be removed by electrolysis and other methods.

There are some common problems and solutions when PCB nickel plating.

4. The coating is dark and uneven in color.

The plating is dark and uneven in color, indicating metal contamination. Because copper is generally plated first and then nickel, the copper solution brought in is the main source of pollution. It is important to keep the copper solution in the carrier to a minimum.

In order to remove the metal contamination in the tank, the corrugated steel plate is used as the cathode, and the current density is electrolyzed. Poor pretreatment, poor bottom plating, too small current density, too low main salt concentration, and poor conductive contact will affect the color of the coating.

5. The plating is blistered or peeled.

Blistering or peeling will occur when the pre-plating treatment is poor, the intermediate power failure time is too long, the organic impurity is polluted, the current density is too high, the temperature is too low, the pH value is too high or too low, and the influence of impurities is serious.

6 Anodizing passivation.

The anodic activator is insufficient, the anode area is too small, and the current density is too high.

7 Ma pit (pinhole).

Ma pit is the result of organic pollution. Large pits are usually an indication of oil contamination. If the stirring is not good, the bubbles cannot be expelled, which will form a pit.

We can use wetting agent to reduce its impact, we usually call small pitting pinholes, poor pretreatment, metal impurities, boric acid content is too little, and the temperature of the plating solution is too low will produce pinholes, so the maintenance of the plating solution and strict control of the process are the key.

1. Copper nickel alloy. It means that it is mainly made of copper, and the surface is electroless plated with nickel-phosphorus alloy. Nickel-phosphorus alloy is a high-strength, high-corrosion resistant metal layer formed by a chemical method.

2. Will the nickel on the water pipe fittings run into the water? In the aqueous environment, copper, nickel, and water are easy to form electrolytic cells, and nickel is more likely to precipitate into nickel ions into water. The precipitation rate depends on the contact area between the nickel layer and the water, and the thickness of the nickel layer.

3. Whether it exceeds the standard, the EU has a standard, no more than micrograms per week. There is no way to know about this fitting. However, the potions of the electroplating industry have been released in nickel-free versions.

And some large companies (jewelry, tired of wearing) have replaced the completely nickel-free process.

Summary. 1 Plating burns Possible causes of plating burns: insufficient boric acid, low concentration of metal salts, too low working temperature, too high current density, too high pH or insufficient stirring.

What is the reason for nickel plating, which can be plated on the outside and not nickel on the inside.

Hello, I am glad to answer your question What is the reason why nickel is plated on the outside and does not grow nickel on the inside The answer is: the information is as follows.

1 Plating burns Possible causes of plating burns: insufficient boric acid, low concentration of metal salts, too low working temperature, too high current density, too high pH or insufficient stirring.

The information is as above.

Dear, I am glad to answer for you that nickel plating can be outside the plating can not be long inside the nickel is generally the reason why the electroless nickel plating of the workpiece is too thin 1, the electroless nickel plating of the workpiece is too thin, so that the workpiece will not be plated, and the electroless nickel plating can be appropriately extended to thicken the electroless nickel plating. 2. After the workpiece is plated with electroless nickel layer, it is placed for a long time, and the surface of the plating is passivated, which affects the conductivity and the electroplating cannot be done. In this case, the workpiece should be acid activated and a nickel layer should be plating on the dark nickel tank with electricity, so that the nickel layer can restore its conductivity and can be easily plated.

3. Improper electroplating method. When the contact area between the workpiece and the hanger is too small, the current will heat up due to excessive resistance when passing through the workpiece, resulting in the dissolution of the workpiece plating and the inability to conduct electricity. In addition, the initial current of the workpiece during plating is too large, which will also lead to the failure of the plating layer.