What is the use of argon in vacuum electroplating?

What is the use of argon in vacuum electroplating?

In high vacuum conditions, high purity coating metal (such as aluminum) after evaporation at high temperature will be free to fly apart and settle on the workpiece surface, forming a coating. Argon is a protective gas to prevent oxidation reactions from affecting the quality of the coating.

Argon gas does not participate in the reaction, but only increases the pressure and improves the discharge conditions of the target during coating. Argon gas is not used for coating, but mainly for creating an environment for coating. Nitrogen and argon are inert gases, after rushing in, one can exclude oxygen, prevent oxidation, two more nitrogen and argon in the diffusion pump content ratio is different, can be coated with different colors. Mainly in order to change the color of the product coating.

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