What Is The Vacuum Coating

What is the vacuum coating?

The film layer is prepared in a vacuum, including the plating of crystal metal, semiconductor, insulator and other elements or compound film. Although chemical vapor deposition also uses vacuum means such as decompression, low pressure or plasma, generally vacuum coating refers to the deposition of thin films by physical methods. Vacuum coating has three forms, namely evaporation coating, sputtering coating and ion coating.
Vacuum coating technology first appeared in the 1930s, began to appear in the 1940s and 1950s industrial applications, industrial mass production began in the 1980s, in the electronics, aerospace, packaging, decoration, bronzing printing and other industries have been widely used. Vacuum coating refers to a kind of metal or metal compound deposited on the surface of materials (usually non-metallic materials) in the form of vapor phase in a vacuum environment, which belongs to the physical vapor deposition process. Because the coating is often metal film, it is also called vacuum metallization. In a broad sense, vacuum coating also includes vacuum evaporation of nonmetallic functional films such as polymers on the surface of metallic or nonmetallic materials. In all the plating materials, plastic is the most common, followed by paper coating. Compared with metals, ceramics, wood and other materials, plastic has the advantages of sufficient sources, easy performance control, convenient processing, so a wide variety of plastic or other polymer materials as engineering decorative structural materials, a large number of automotive, home appliances, daily packaging, process decoration and other industrial fields. But the plastic material is the surface hardness is not high, not enough gorgeous appearance and low wear resistance of defects, such as the plastic surface evaporation, a thin layer of the metal film, can give the appearance of plastic Alfred metal, suitable metal source also can greatly increase the surface wear resistance, greatly broaden the plastic decorative and application scope.
The function of vacuum coating is many, which also determines its application is very rich. In general, the main functions of vacuum coating include giving the surface of the plated parts a high degree of metallic luster and mirror effect, so that the film on the material

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