Determination of Corrosion Rate of Rhenium and Its Alloys

The polarization curves were measured on the specimens of rhenium and several its alloys with molybdenum, nickel and tungsten in the NaCl solutions free of additives and containing NaOH or HCl additives, and also in the sulfuric acid and nitric acid solutions. The corrosion current densities were determined by the method of Tafel extrapolation. The corrosion rates in the linear and weight units were calculated for several metals and alloys. The effect of the metal (Mo, Ni, W) nature on the corrosion behavior of rhenium alloys with these metals was shown.