The anodic polarization of titanium in halide solutions☆
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2019, Journal of Materials Processing TechnologyCitation Excerpt :Adjusting electrolyte feedstocks has been shown to reliably affect workpiece response to electrochemical processing in a range of materials. Regarding titanium, Dugdale and Cotton (1964), showed the breakdown potential of titanium oxide films in halide electrolytes to follow the relationship F¯>Cl¯>I¯>Br¯; a relationship discrete from many other materials that are more susceptible to attack from chloride. This was proposed to be a consequence of halide adsorption at the TiO2 interface, governed by ionic polarizing power and is indicative of a mechanism discrete from breakdown through ion penetration which is expected to be more rapid with smaller anions (Frankel, 1998).
A state-of-the-art review on passivation and biofouling of Ti and its alloys in marine environments
2018, Journal of Materials Science and TechnologyCitation Excerpt :Localized corrosion has been found on Ti alloys after long-term immersion in sulfate acid [102]. Oxygen-containing anions usually act as inhibitors for pitting corrosion of metals in halide solutions due to their preferential adsorption on the surface oxide films [103]. In H2SO4 solutions, the passivation of Ti mainly depends on pH, not Cl− concentration [104].
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Manuscript received 23 March 1964.
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Present address: British Railways Board, Research Department, The Avenue, Muswell Hill, London N.10.