Synthesis and characteristics of the protective coatings for titanium alloys via fast-pulsed plasma electrolytic oxidation in alkaline solutions have been described. Obtained coatings have improved physical and mechanical properties – the wear-resistance increases in 3 - 12 times higher compared to the uncovered ones. The coefficient of friction curves reveals the absence of coating destruction. The rubbing surfaces adapt to each other and pass into the regime of stable friction. The microhardness of the coatings is higher in 2-3 times compared to the initial sample without coating. Morphological studies show that the porosity of the coatings is 6.2 % - 12.2 %. The neutral salt spray corrosion tests at the temperature of (35 ± 2) °C for 1000 hours demonstrate that the resulting coatings are corrosion resistant.
Volume 12 | 06-Special Issue
Pages: 858-865
DOI: 10.5373/JARDCS/V12SP6/SP20201103