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Knowledge about vacuum coating 24k gold

Knowledge about vacuum coating 24k gold

2022-07-20

Knowledge about vacuum coating 24k gold









Regarding vacuum gold plating, it refers to plating a thin layer of gold on the surface of the vessel, and the purity of the gold is above 95.9%.


Vacuum plated gold bars are just a layer of gold. It's just that the outside is plated with a layer of gold, and there is other gold inside, which may be silver, copper, or even worthless iron. Whether gold plating and gold are the same grade depends on whether the gold plating is of the same material or different materials. If it is gold-plated of the same material, it is the same grade; the gold with the highest purity is also called 24K gold, so it is higher than gold.


The quality of gold plating depends on the thickness of the gold layer and its light and dark luster. The international standard for gold-plated jewelry is: the coating thickness of good gold-plated jewelry is 10-25 microns, and the coating thickness of general gold-plated jewelry is 2-3 microns. If the thickness of electroplating is less than 0.18 microns, it cannot be called "gold plating", but "gold plating", which is a cheap jewelry craft.


Judging from the concentration of the gold plating solution, the gold plating solution with water is generally acidic, and its gold content is low, up to 0.4 ~ 0.5g/L. The cost of this kind of plating solution is low, so the loss caused by the solution is less. The color of the gold layer obtained by the plating solution is blue gold, which is especially suitable for small hardware such as buttons and belt buckles. , The electroplating batch is large, the processing cost is low, and gold plating is required.




What does vacuum plating 24k gold mean?


The vacuum coating of 24k gold is to inject argon gas into the gold target in a vacuum state, and the argon gas strikes the gold target, so that the gold target is separated into molecules, and the molecules are adsorbed by the conductive electroplating metal, and the surface forms a uniform and smooth surface.


Vacuum-coated 24k gold is pure gold with a gold content of 99.998%, with a golden appearance and high chemical stability. Therefore, electroplating 24k gold is often used as a decorative coating, mainly for jewelry production.


Vacuum-coated 24k gold jewelry needs good maintenance when wearing it, because it is easy to get stained with sweat on the surface when wearing it, resulting in a chemical reaction, which will cause the gold plating to fade and affect the appearance. Therefore, it is often wiped with a cotton cloth when wearing it.




Is 24k gold plated real gold?


24K is the color code for gold products, not gold plating.


Pure gold is also called pure gold, and the purity is represented by k, so the gold with the highest purity is also called 24K gold, which means that the gold content reaches more than 99.6%. High-purity gold is very soft, it will deform with a slight squeeze, and it is the most valuable.


In theory, 100% pure gold can be called 24K gold, but in reality it is impossible to have 100% gold. Therefore, gold with a content of more than 99.96% in my country can be called 24K gold, which means that 24K is pure gold.

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