Oxidation Mechanism of YSZ/NiCr Coating Prepared by Hollow Cathode Glow Discharge Phenomenon and Multi-arc Ion Plating

Herein, NiCr was coated on γ-TiAl via the hollow cathode glow discharge, whereas yttria stabilized zirconia (YSZ) was coated on the NiCr by multi-arc ion plating. A strong bonding between the two coatings and substrate, i.e., NiCr, YSZ, and γ-TiAl occurred. However, the surface of YSZ coating displayed macroparticles of different sizes, which affected the oxidation resistance. High-temperature oxidation behavior of YSZ/NiCr coating was...