Structural evolution of ceramic coatings by mechanical alloying

Abstract

Abstract This article researches the formation of ceramic coatings of zirconium dioxide (ZrO2) on a X 12 Cr Ni 18 10 Ti steel surface after mechanical alloying. The study of the coating surfaces shows a coalescence of defected coating particles with subgrains created. This process is more representative due to the difference in toughness between zirconium oxide and steel. It is suggested that an adhesive bond between the coating and support structure is provided by the strain welding of the powder on the support structure coating. When using X-phase analysis, neither the diffusive mixing of coating/support structure components nor the formation of new compounds and phase changes are revealed. Surface contamination of the coating with carbon was found. It decreased in the direction of the border between the coating and the support structure. This may be due to the mechanical sorption of carbon dioxide from the environment.