Abstract
Oxidation ceramic coatings were prepared by MAO (microarc oxidation) technology in sodium phosphate electrolyte on Ti6Al4V titanium alloy. The morphology of the coating surface and the interface, and the phase composition were studied by OM, SEM, XRD respectively. The thermal cycling oxidation experiment at 700°C was carried out to evaluate the oxidation resistance property. The result showed that the ceramic coatings made by MAO technology on titanium alloy were composed of a porous layer and a dense layer which was regarded as a transition layer bonding the substrate and the porous layer. The coating was mainly consisted of rutile and anatase TiO2. The thermal cycling oxidation experiment showed that the coating had an excellent oxidation resistance at 700°C. The oxidation reaction constants and the reaction index of Ti6Al4V substrate and coated sample were determined through fitting oxidation kinetics data by linear regression equation.
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
