Corrosion Fatigue Inhibition of SS Type 304 in Acidic Media in Presence of Some Pyrimidine Derivatives

The corrosion fatigue (CF) susceptibility of SS type 304 in 0.1 M HCl solution and the inhibiting effect of pyrimidine derivatives using a corrosion cell on a cantilever rotary-bending fatigue test machine were investigated. Scanning electron microscopy (SEM) was conducted on surface fracture of some specimens. The results indicated that the inhibitive action of pyrimidine derivatives can be attributed to its adsorption and inhibiting the anodic dissolution of the metal by the effect of blocking the active sites on the surface then improve the fatigue life of the specimens. Polarization measurements revealed that these pyrimidine derivatives behave as mixed-type inhibitors.