Industry News

Surface treatment process —— PVD

Views : 456
Author : Rony
Update time : 2023-02-09 15:43:08
Physical Vapor Deposition
Physical Vapor Deposition (PVD) , refers to the deposition of titanium, gold, graphite, crystal and other metals or non-metals, gases and other materials on the substrate to form films of different colors and textures in vacuum by sputtering, evaporation or ion plating technologies.PVD film layer gives the product surface metal texture and rich color, and improves wear resistance, corrosion resistance, prolong the life.Has been widely used in watchcase, watchband, mobile phone case, building hardware, mold tools and other products.


The principle
Under vacuum conditions, the use of low voltage, high current arc discharge technology, the use of gas discharge to vaporize the target material and vaporized substance and gas ionization, the use of electric field acceleration, so that the evaporated substance and its reaction products deposition on the workpiece.
Classification of PVD coating
PVD vacuum coating according to the film application can be classified into decorative film and hard film: Decorative film layer can improve the appearance of the workpiece decorative performance and color and make the workpiece more wear and corrosion resistant; Hard film layer is used to improve the surface hardness and wear resistance of the workpiece, reduce the friction coefficient of the surface, and improve the service life of the workpiece.
There are various types of coatings, such as pure gold plating coating, TiN, TiC, TiCN, ZrN, CrN, MoS2, TiAlN, TiAlCN, tin-Aln, CNx, DLC and ta-C and other multiple composite coatings.

What are the advantages of PVD?
①Has a strong metallic texture, gorgeous color effect;
②Can be applied to a variety of workpiece surface The film layer has high strength, good compactness, strong corrosion resistance, uniform film thickness;
③Ultra-high hardness, applied to the surface of the tool, mold to enhance its hardness and tolerance;
④No pollution to the environment, no harm to the operator, green 
environmental protection process.

 
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