Carbon dot complimentary green corrosion inhibitor for crystallographically textured Beta C titanium alloy for marine application: A state of art

Abstract

The corrosion properties of Beta C titanium alloy were shown to differ remarkably, by more than one order of magnitude, with the crystallographic texture. More specifically, the maximum volume fraction of γ-fiber (ND//< 111 >) and large-sized grains were preferentially engineered by heat treatment to provide a corrosion-resistant surface. It was proposed that the ND//< 111 > grains, with lower dislocation content, are key in preferentially limiting corrosion. For 90% rolled plus annealed beta titanium alloy, the lowest corrosion current density, and maximum impedance were attained in nitrogen-based carbon dots containing NaCl electrolyte. Analysis using ultraviolet spectroscopy, and X-ray diffraction showed that the heteroatoms in the structural moiety of the carbon dots effectively bond to the titanium surface by physiochemical interaction.