Bernex aluvap cva coating systems are designed to produce diffusion coatings for protection against hot corrosion and high-temperature oxidation. Cva (chemical vapour aluminizing) is a variant of cvd technology, where aluminum is used to diffuse into the substrate to form intermetallic compounds, e.g. Nickel aluminides. The coatings can be also doped with such performance enhancing elements such as cr, si, hf, zr etc.