PVD coating can last anywhere from 10 years to hundreds of years, depending on factors such as the composition, thickness, and application of the coating. The durability of the coating also depends on how well it adheres to the underlying substrate. The tighter the bond between the base metal and PVD coating, the longer the coating will last. PVD coatings are commonly used in applications where they must withstand high temperatures and high wear.
When evaluating a PVD coating, it is important to consider the surface finish required. The PVD coating will not level or fill like an electroplated finish, so surface imperfections will still be visible after the coating process. Polished or mirror surfaces are used to produce PVD polished finishes, while brushed or satin surfaces are used to produce satin or matte PVD finishes.
The coating thickness of PVD coatings is usually between 0.25 microns and 5 microns. The increase in tool life after PVD or CVD coating can range from 2-3 times the life of an uncoated tool, but some applications have shown increases that exceed 10 times the life of an uncoated tool.
In terms of material compatibility, PVD coatings adhere best to chrome-plated materials. However, with thorough chrome plating with Nickel/Chrome, almost any material can be PVD coated. PVD can be deposited directly onto stainless steel and titanium metals.
Overall, PVD coating is a durable and long-lasting option for changing the color or appearance of metal surfaces in various industries, including the jewelry industry.
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