The difference between electroless gold plating and electrodeposition

The advantage of electroless plating is that the part that is to be plated does not need electrical connection, the coating is uniform , and it is suitable for surface mount. The disadvantage is that the solution is difficult to maintain , the chemical nickel to be used to wash the trough regularly to wash the surface of the bath to sink the nickel, so as to cause the production of discontinuous. Operating costs are also high. The hardness and abrasion resistance of electroless gold plating layer are worse than that of electroplating hard gold, which can reach a limited thickness and is not suitable for some surface mount welding methods. To compensate for this shortcoming, electroless nickel-plated palladium is also used instead of electroless ni-gold to suit the various welding methods of surface mount.

The advantages and disadvantages of electroplating gold are the opposite. Plating gold (hard gold) hardness and wear resistance than the chemical gold-plated, the solution is easy to maintain, do not need to wash groove, can be suitable for surface mount of various welding methods. The main disadvantage is that the thickness is not uniform, the part to be plated requires electrical connection .
At present, the gold-plated quality is cyanide (potassium) gold-plated for good, its color, adhesion, wear resistance is better than cyanide-free gold. In recent years, with the progress of electroplating technology, gold plating process has a new breakthrough, the past gold-plated jewelry only a gold color. Now France, the United States, Japan's gold-plated jewelry has three colors, or even more colors. is called three-color gold color gold electroplating, there are roses, silver, gold, black, blue and other several. In general, the same gold-plated plating does not need to be too thick, it can only reach 2 microns. The plating of the dissimilar gold plating should be thicker. Some countries stipulate that the plating of such products must reach more than 10 microns, such as the British famous Johnson and the United Kingdom, the gold plating coating is required to reach 12.5 microns, only qualified.

The difference between electroless gold plating and electrodeposition