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Comparative Electrochemical Studies of F 1586-95 and F 138-92 Stainless Steels in Sodium Chloride, pH = 4.0 Medium Pages: 8 Published: Jan 2003
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View License Agreement Source: STP1438-EB Abstract In this work, ASTM F 1586-95 stainless steel used for surgical implants is studied in 0.9 % NaCl aqueous solution, pH = 4.0 at 40 °C, using potentiodynamic polarization curves and optical surface analysis techniques and its performance is compared to F 138 stainless steel. F 1586-95 remains passivated until transpassivation potential above, which shows only generalized corrosion. F 138-92 presents breakdown potentials of 370 mV / SCE, with the presence of pitting corrosion. The presence of 0.40 % Nb in F 1586-95 promotes passivation currents one order of magnitude higher than that observed for F 1586-95 containing 0.28 % Nb.
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