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golden color SS 316 Design Stainless Steel Sheet with different colors for food package
The application of coatings on materials is one of the most used strategies in the industry to improve their properties. By deposition of coatings, a wide range of characteristics of a material can be improved, from a tribological point of view to an aesthetic point of view.
In today’s blog, we present a technology that has great potential in the application of coatings. This technology is physical vapor phase deposition (PVD).
What is physical vapor deposition or PVD?
High hardness coatings of composite materials, resistant to wear and corrosion, widely used for the improvement of mechanical tools.
Physical Vapour Deposition (PVD) describes a variety of vacuum deposition methods used to deposit thin films by the condensation of a vaporized form of the desired film material onto infinite parts (automotive, aerospace, optics, packaging, cosmetics etc.). The coating method involves purely physical processes such as vacuum evaporation with subsequent condensation, or plasma sputtering. Sputtering involves a glow plasma striking the material to be deposited, a metal target or magnetron, in which some of the material is sputtered away as vapour to fall on the substrates in the chamber. In the coating world, it is the newest ecological alternative to traditional chrome plating that has been used for billions of parts. This is because it has been proven to increase durability and weigh less than chrome coating. Physical vapour deposition has gained popularity for many reasons, including that it enhances a product’s durability. In fact, studies have shown that it can enhance the lifespan of an unprotected product tenfold.
Is PVD Coating Food-Safe?
PVD coatings vary dramatically in their chemical properties, but most adhere strongly to their substrate once applied and are often chemically and biologically inert. One of PVD’s most prominent industries is the cutlery industry for both decorative and functional applications, including commercial kitchen equipment.
Grade: 201 202 304 304L 316L 410 420 430 310S 321 904L 2205 2507
Steel Grade: 301L, S30815, 301, 304N, 310S, S32305, 410, 204C3, 316Ti, 316L, 441, 316, L4, 420J1, 321, 410S, 410L, 436L, 443, LH, L1, S32304, 314, 347, 430, 309S, 304, 439, 204C2, 425M, 409L, 420J2, 436, 445, 304L, 405, 370, S32101, 904L, 444, 301LN, 305, 429, 304J1, 317L,
Surface Finish BA/2B/NO.1/NO.4/8K/H
PVD applications
it is worth highlighting the precision and purity offered by physical vapor deposition to obtain coatings. The main PVD applications currently in use are as follows:
Metallic coatings to provide semiconductor properties to a substrate that initially are not.
Magnetic film coating.
Coatings for decorative purposes, widely used in the jewelry area.
Coatings for solar glasses or mirrors, which act as optical interference barriers or reflective barriers.
Conductive layers of palladium or carbon, for electron microscopy samples.
High hardness coatings of composite materials, resistant to wear and corrosion, widely used for the improvement of mechanical tools.
Development of golden colors using physical vapor deposition technology. In this project, the objective was to obtain different shades of golden color on metallic substrates. To carry it out, the optimization of the PVD process of different metallic targets and reactive gases was carried out. As can be seen in the photo, it was obtained from an intense gold to a lighter gold with pink tones.
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