In the past and for the future several different types of coatings got established or are under development and evaluation:
• Au (Gold)
• Metal-nitrides (Titanium-nitride and others)
• DLC (diamond-like-carbon in various compositions)
Such coatings can be deposited by PVD (physical vapor deposition) – processes such as:
- PECVD (Plasma Enhanced Chemical Vapor Depositen)
Metal-nitrides coated bipolar plates from an international bipolar plate manufacturer.
DLC coated bipolar plate from an international bipolar plate manufacturer.