Abstract
The structures and properties of plasma electrolytic oxidation（PEO）coatings in alkaline electrolyte on titanium and titanium alloy Ti6Al4V were investigated. A dark gray anodic coating with 1-3 μm thickness, the same as that described in the AMS 2488 standard, was obtained using PEO followed by mechanical post-treatment. It has been shown that the anodic coating exhibits excellent adhesion, a low friction coefficient, and enhanced wear resistance. After PEO and post-treatment, no substrate strength decrease or measurable change in dimensions was observed.
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