08.05.2013 Views

Volumen II - SAM

Volumen II - SAM

Volumen II - SAM

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

4. CONCLUSIONES<br />

Los espesores y la estructura de las capas pasivas guardan una relación directa con el tratamiento térmico de<br />

la aleación base, el cual induce una determinada característica microestructural. La mayor concentración de<br />

Cr disuelto en la matriz de las muestras con alto contenido de austenita retenida conduce a la formación de<br />

películas pasivantes más gruesas, tanto para la capa interna de óxido de Cr, responsable de la verdadera<br />

pasividad, así como para la capa externa de óxido férrico. Además esa microestructura condiciona mayores<br />

velocidades de formación de la película pasivante. Los resultados permiten discutir un posible mecanismo de<br />

reducción de los óxidos superficiales que involucra solo reacciones de estado sólido. Por otra parte, se pudo<br />

confirmar una estructura de la película pasiva comparable a la que fuese informada para otros aceros<br />

inoxidables.<br />

REFERENCIAS<br />

1. C.A. Gervasi, P.D. Bilmes, C.L. Llorente, “Metallurgical factors affecting localized corrosion of low-C<br />

13CrNiMo martensitic stainless steels”, in Corrosion Research Trends, Chapter 1, 2007, I.S. Wang Ed.,<br />

Nova Science Publishers, New York.<br />

2. P.D. Bilmes, C.L. Llorente, C. M. Méndez and C.A. Gervasi, “Microstructure, heat treatment and<br />

pitting corrosion of 13CrNiMo plate and weld metals”; Corrosion Science, Vol. 51 (2009), p. 876-881.<br />

3. P. Schmuki and H. Böhni, “Illumination effects on the stability of the passive film on iron”;<br />

Electrochim. Acta, Vol. 40 (1995), p. 775-783.<br />

4. Tor Hurlen, “Passive behaviour of Tin”; Electrochemica Acta, Vol. 39 (10) (1994), p.1359-1364.<br />

5. K.J. Vetter, “Electrochemcial Kinetics: Theoretical and Experimental Aspects”; 1967, Academic Press,<br />

New York, NY.<br />

6. A.J. Sedrick, “Corrosion of Stainless Steels”; 1996, 2nd Edition, John Wiley & Sons, New York, NY.<br />

7. Chun-Che Shih, Chun-Ming Shih, Yea-Yang Su, Lin Hui Julie Su, Mau-Song Chang and Shing-Jong<br />

Lin, “Effect of surface oxide properties on corrosion resistance of 316L stainless steel for biomedical<br />

applications”, Corrosion Science, Vol. 46 (2004), p. 427–441.<br />

8. C. Giacomelli, F.C. Giacomelli, R.L. Bortolluzzi and A. Spinelli, “Properties of potentiostatic passive<br />

films grown on iron electrodes immersed in weak-alkaline phosphate solutions”; Anti-Corrosion<br />

Methods and Materials, Vol. 53 (2006), p. 232-239.<br />

9. K. Ogura and T. Majima, “Formation and reduction of the passive film on iron in phosphate-borate<br />

buffer solution”; Electrochim. Acta, Vol. 23 (1978), p. 1361-1365.<br />

10. David R. Lide, “CRC Handbook of Chemistry and Physics”; 2004/2005, CRC Press, 85th ed., Boca<br />

Raton.<br />

11. Chun-Gang Duan, Ce-Wen Nan, S. S. Jaswal and E. Y. Tsymbal, “Universality of the surface<br />

magnetoelectric effect in half-metals”; Physical Review B 79, 140403 (R) (2009), p. 1-4.<br />

12. I.V. Sieber, H. Hildebrand, S. Virtanen and P. Schmuki,“ Investigations on the passivity of iron in<br />

borate and phosphate buffers pH 8.4”; Corrosion Science, Vol. 48 (2006), p. 3472–3488.<br />

13. J. Enerhaug, Ø. Grong, U. M. Steinsmo, “Factors affecting initiation of pitting corrosion in super<br />

martensitic stainless steel weldments”; Science and Technology of Welding and Joining, Vol. 6 (2001),<br />

p. 330-338.<br />

14. M. Kimura, Y. Miyata, T. Toyooka, Y. Kitahaba, “Effect of retained austenite on corrosion<br />

performance for modified 13% Cr steel pipe”; Corrosion, Vol. 57 (2001), p. 433-439.<br />

913

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!