Metals suitable for PVD coating include all steel families, especially high-alloy steels like high-speed steels and stainless steels, hard metals and other tool materials, non-ferrous metals such as copper, aluminum, and their alloys (e.g., brass), and chrome or nickel plated metal products. However, brass without galvanization or galvanized materials are not recommended due to their vacuum-unfriendly nature, which can negatively affect the production process and vacuum stability.
PVD technology allows for the deposition of various metals including aluminum, chromium, titanium, stainless steel, nickel chrome, and tin, using methods like thermal evaporation, cathodic arc, sputtering, pulsed laser deposition, and electron beam deposition. Sputtering, a common method, involves ejecting atoms from a solid metal target into a gas phase due to high-energy ion bombardment, depositing the atoms onto the part within a vacuum chamber.
PVD coatings can provide colored surfaces such as gold (TiN), rose gold (ZrN), bronze (TiAlN), blue (TiAlN), black (TiAlCN), and dark red (ZrN), which are more uniform and abrasion-resistant than electrochemical coloring. Titanium and stainless steel are frequently PVD coated due to their strength, durability, and corrosion resistance, enhancing their performance and appearance in industries like aerospace, medical, and food and beverage.
In summary, PVD coating is applicable to a wide range of metals, improving their functional and decorative properties, although certain materials like ungalvanized brass are not suitable due to their impact on vacuum stability during the coating process.
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