Gold coating machine is a device that uses physical methods to deposit the target material onto the surface of the workpiece in a vacuum environment to form a thin film with a golden appearance.
The golden effect mainly comes from the color of compounds such as titanium nitride (TiN) or zirconium nitride (ZrN), rather than real gold plating.
Application advantage :
PVD gold coating (mainly TiN/ZrN) has significant advantages over traditional electroplating gold (water electroplating gold) or other surface treatment technologies:
Excellent wear resistance
TiN and ZrN are ceramic coatings with extremely high hardness.
Significantly improve the scratch and wear resistance of the workpiece surface and extend the product life.
This is one of the core advantages of PVD gold coating.
Excellent corrosion resistance
The dense ceramic film layer can effectively isolate the substrate from the external environment (water vapor, oxygen, salt spray, acid and alkali, etc.)
Provides better long-term rust and discoloration resistance than ordinary electroplating.
Beautiful and long-lasting gold decorative effect
A variety of gold tones are available, from light gold to deep rose gold (by adjusting the nitrogen ratio or incorporating other elements such as carbon).
The color is uniform, bright and has a strong metallic texture.
The film has stable color and is not easily faded or darkened due to light, oxidation or slight wear and tear, and will remain as good as new for a long time.
Good adhesion
After rigorous ion bombardment cleaning and activation, as well as the mutual diffusion between the film layer and the substrate at high temperature, the PVD film layer usually has very excellent adhesion and is not easy to peel off.
Environmental friendliness
Mainly inert gas (Ar) and reaction gas (N₂), the process does not produce a large amount of toxic waste liquid and waste gas. The waste materials are mainly metal target waste and vacuum pump oil, which are relatively simple to handle.
Wide range of substrate adaptability
Not only can it be coated on metals such as stainless steel and titanium alloys, but it can also achieve good coating effects on brass, zinc alloys, and even some plastics (such as ABS) that have been properly pre-treated.
Controllable film properties
By precisely adjusting process parameters (such as gas ratio, temperature, bias voltage, time, etc.), the color, hardness, thickness, internal stress, structure and other properties of the film layer can be controlled to meet different application requirements.
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