PVD Coating for Colored Stainless Steel Sheets

What is PVD coating ?

PVD stands for Physical Vapor Deposition.

PVD Coating refers to a variety of thin film deposition techniques where a solid material is vaporized in a vacuum environment and deposited on substrates as a pure material or alloy composition coating. 

PVD coatings surpass traditional electroplated coatings, it's more corrosion resistant and have superior hardness.

The process of PVD coating

During the process, first of all the stainless steel is cleaned to make sure that the coating will bond well. The steel is then placed in a vacuum chamber with a “target” metal; this will be used to create the coating. A high vacuum level is needed in the coating chamber, then a small amount of argon gas is introduced. A high voltage circuit is used in order for the stainless steel and target to bond or adhere. This allows the argon ions to bombard the target to release atoms of the target metal, which are deposited on the stainless steel substrate as the coating. This PVD process is called sputtering; resulting in the deposition of plasma on the stainless steel surface which gives it its new strength and shine.

The coloured surface coatings that can be obtained using PVD include: gold (TiN), rose gold (ZrN), bronze (TiAlN), blue (TiAlN), black (TiAlCN), as well as a dark red (ZrN). This ceramic coating which is produced is very thin, making the texture of the underlying finish still visible. These PVD colours will not fade over time and more abrasion-resistant than colouring which is done by the electrochemical processes.

A spectrum of colour options for PVD coating

When it comes to stainless steel you’re not just restricted to simply silver. There are a rainbow of colour opportunities which can be achieved through the Physical Vapour Deposition (PVD) process. 

HCADTO Stainless Steel Co., Ltd. the Stainless Steel Division of ADTO GROUP, is one of the leading manufacturers of stainless steel products in China. If you have any inquiry and question on stainless steel, please do not heasitate to contact us: adtogroup@adtooo.com