engleski

Crevice corrosion resistance of high alloyed materials in 3.5 % NaCl solution

The effects of applied torque on corrosion behaviour of W. Nr. 1.4404 and 1.4462 stainless steels and nickel alloys W.Nr. 2.4605 and 2.4858 with crevices were investigated using the cyclic potentiodynamic polarization method. Crevice corrosion (material-to-polytetrafluoroethylene) was tested in 3.5 wt.% NaCl solution at 22 °C. The corroded surface was recorded using Scanning Electron Microscopy (SEM). Results indicate similar trends in susceptibility to crevice corrosion with increasing the torque. Among the four specimens, the W. Nr. 1.4404 is the most susceptible to crevice corrosion.

crevice corrosion; cyclic potentiodynamic polarization; stainless steel; nickel alloy

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