Abstract
The ceramic composite coatings consisting of Al2O3 bond-coat (70–90μm) and La2Zr2O7 top-coat (300–330μm) were prepared by two-step cathode plasma electrolytic deposition (CPED) on titanium alloy. Compared with single La2Zr2O7 coating, the bonding strength of the composite coatings was improved by 40%, owing to the anchor-bond of Al2O3 coating and La2Zr2O7 coating. High temperature cyclic oxidation at 700°C was adopted to investigate the high temperature corrosion resistance of the La2Zr2O7 coating and the composite coatings. The results revealed the composite coatings possessed the best high-temperature oxidation and spallation resistance. Deposition processes of La2Zr2O7 coating and Al2O3/La2Zr2O7 composite coatings were illustrated through current density-time curves.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
