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Characteristics of vacuum coating processing
Release time:
2022-05-12
Characteristics of vacuum coating processing. Vacuum coating is an important aspect of vacuum applications. Vacuum coating processing is based on vacuum technology and uses physical or chemical methods. It incorporates a series of new technologies such as electron beams, molecular beams, ion beams, plasma beams, radio frequency, and magnetron sputtering.
Vacuum Coating Processing Characteristics of vacuum coating. Vacuum coating is an important aspect of vacuum applications. It is based on vacuum technology and uses physical or chemical methods, incorporating a series of new technologies such as electron beams, molecular beams, ion beams, plasma beams, radio frequency, and magnetron sputtering.
(1) A wide range of film and substrate materials can be selected, and the film thickness can be controlled. Vacuum coating processing can produce various functional films.
(2) The film is prepared in a vacuum, the environment is clean, and it is not easily polluted. Vacuum coating processing can obtain films with good density, high purity, and uniform coating.
(3) The bonding strength between the film and the substrate is good, and the film is strong.
(4) Dry coating does not produce waste liquid or environmental pollution.
As is known to all, some materials, only by coating a thin film on the surface, can have many new and good physical and chemical properties. In the 1970s, the main methods for coating the surface of objects were electroplating and chemical plating. The former passes electricity through an electrolyte, and the electrolyzed ions are plated on the surface of the substrate as another electrode. Therefore, the substrate must be a good electrical conductor, and the film thickness is difficult to control. The latter is a chemical reduction method, which requires the film material to be prepared into a solution and can quickly participate in the reduction reaction. This coating method not only has poor film bonding strength, but also uneven coating and difficult to control. At the same time, a large amount of waste liquid will be produced, causing serious pollution. Therefore, these two coating processes, known as wet coating, have been greatly limited.
Vacuum Coating Processing It is a new type of coating technology developed relative to the above-mentioned wet coating, and vacuum coating processing is usually called dry coating technology.
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