Specific Features of Ruthenium Influence on Corrosion Characteristics of Different Titanium Alloys

—This article discusses the results of corrosion tests and microstructural studies of forgings from various titanium alloys modified with ruthenium, of systems Ti–Al–Zr + 0.15% Ru, Ti–Al–V–Mo + 0.15% Ru, and Ti–Al–V–Cr–Fe–Mo + 0.15% Ru and similar systems of basic compositions. On the basis of the performed complex of studies, the influence of the amount of the β phase on the local content of ruthenium and, as a consequence, on the effect of cathodic protection in general is analyzed.