Efecto de la composición sobre el comportamiento frente a la corrosión de aceros inoxidables austeníticos y martensíticos

ABSTRACT The aim of this work is to study the electrochemical behavior of a series of stainless steels in NaCl solution (10000 ppm Cl-) at room temperature. Considering the differences in structures (austenitic and martensitic) and the composition of alloys, a relationship between their electrochemical behavior and PREN (Pitting resistance equivalent number) was sought. Stainless steels used were: F6NM, 17-4PH, 416 and 304. Measures of open circuit potential in function of time, cyclic potentiodynamic polarization curves, determining the polarization resistance by ASTM G59 (Tafel) and Electroc...