Cu<sub>60</sub>Zr<sub>30</sub>Ti<sub>10</sub> (at. %) ribbon was prepared by melt spinning. Its glassy structure was confirmed by X-ray diffraction (XRD). Its corrosion behavior in HCl and NaCl solutions was investigated by electrochemical polarization measurement. The surfaces before and after corrosion were observed with scanning electron microscope (SEM) and analysis was performed using electron dispersive spectroscopy (EDS). The results show that the decrease of current density is due to the formation of a mixture of simple oxides or complex oxidic compounds. In both cases, the corrosion potential decreases with increasing chloride concentration. The passive film forms easier in HCl than in NaCl. In addition, the higher is the chloride concentration, the easier is the passivation.
KeywordsMetallic GlassCorrosion BehaviorChloride Media
W. H. Wang, C. Dong and C. H.Shek, “Bulk metallic glasses,” Mater. Sci. Eng. R, Vol. 44, No. 2-3, June 2004, pp. 45-89.
M.L. Morrison, R.A. Buchanan, R.V. Leon, C.T. Liu, B.A. Green, P.K. Liaw and J.A. Horton, “The electrochemical evaluation of a Zr-Based bulk metallic glass in a phosphate-buffered saline electrolyte,” J. Biomed. Mater. Res. A, Vol. 74A, No. 3, September 2005, pp. 430-438.
S. Hiromoto, A.P. Tsai, M. Sumita and T. Hanawa, “Effect of chloride ion on the anodic polarization behavior of the Zr65Al7.5Ni10Cu17.5 amorphous alloy in phosphate buffered solution,” Corros. Sci., Vol. 42, No. 9, September 2000, pp. 1651-1660.
A. P. Wang, X. C. Chang, W. L. Hou and J. Q. Wang, “Corrosion behavior of Ni-based amorphous alloys and their crystalline counterparts,” Corros. Sci., Vol. 49, No. 6, June 2007, pp. 2628-2635.
P. F. Gostin, A. Gebert and L. Schultz, “Comparison of the corrosion of bulk amorphous steel with conventional steel,” Corros. Sci., Vol. 52, No. 1, January 2010, pp. 273-281.
Z. M. Zhang, J. Zhang, X. C. Chang, W. L. Hou and J. Q. Wang, “Structure inhibited pit initiation in a Ni–Nb metallic glass,” Corros. Sci., Vol. 52, No. 4, April 2010, pp. 1342-1350.
R. V. Subba Rao, U. Wolff, S. Baunack, J. Eckert and A. Gebert, “Corrosion behaviour of the amorphous Mg65Y10Cu15Ag10 alloy,” Corros. Sci., Vol. 45, No. 4, April 2003, pp. 817-832.
S. J. Pang, T. Zhang, K. Asami and A. Inoue, “Bulk glassy Fe–Cr–Mo–C–B alloys with high corrosion resistance,” Corros. Sci., Vol. 44, No. 8, August 2002, pp. 1847-1856.
A. Gebert, P. F. Gostin and L. Schultz, “Effect of surface finishing of a Zr-based bulk metallic glass on its corrosion behaviour,” Corros. Sci., Vol. 52, No. 5, May 2010, pp. 1711-1720.
H. B. Lu, Y. Li and F. H. Wang, “Dealloying behaviour of Cu–20Zr alloy in hydrochloric acid solution,” Corros. Sci., Vol. 48, No. 8, August 2006, pp. 2106-2119.
H. B. Lu, L. C. Zhang, A. Gebert and L. Schultz, “Pitting corrosion of Cu–Zr metallic glasses in hydrochloric acid solutions,” J. Alloys Compd., Vol. 462, No. 1-2, August 2008, pp. 60-67.
A. Inoue, “Stabilization of metallic supercooled liquid and bulk amorphous alloys,” Acta Mater., Vol. 48, No. 1, January, 2000, pp. 279-306.
A. Inoue, W. Zhang, T. Zhang and K. Kurosaka, “High- strength Cu-based bulk glassy alloys in Cu–Zr–Ti and Cu–Hf–Ti ternary systems,” Acta Mater., Vol. 49, No. 14, August 2001, pp. 2645-2652.
A. Inoue, W. Zhang, T. Zhang and K. Kurosaka, “Thermal and mechanical properties of Cu-Based Cu-Zr-Ti bulk glassy alloys,” Mater. Trans. JIM, Vol. 42, No. 6, June 2001, pp. 1149-1151.
K. Asami, C. Qin, T. Zhang and A. Inoue, “Effect of additional elements on the corrosion behavior of a Cu–Zr–Ti bulk metallic glass,” Mater. Sci. Eng. A, Vol. 375-377, No. 7, July 2004, pp. 235-239.
C. Qin, K. Asami, T. Zhang, W. Zhang and A. Inoue, “Corrosion behavior of Cu-Zr-Ti-Nb bulk glassy alloys,” Mater. Trans. JIM, Vol. 44, No. 4, April 2003, pp. 749-753.
F.R. Niessen, “Cohesion in Metals,” Elsevier Science, Amsterdam, 1988.
T. Yamamoto, C. Qin, T. Zhang, K. Asami and A. Inoue, “Formation, thermal stability, mechanical properties and corrosion resistance of Cu-Zr-Ti-Ni-Nb bulk glassy alloys,” Mater. Trans. JIM, Vol. 44, No. 6, June 2003, pp. 1147-1152.
B. Liu and L. Liu, “Improvement of corrosion resistance of Cu-based bulk metallic glasses by the microalloying of Mo,” Intermetallics, Vol. 15, No. 5-6, May-June 2007, pp. 679-682.
B. Liu and L. Liu, “The effect of microalloying on thermal stability and corrosion resistance of Cu-based bulk metallic glasses,” Mater. Sci. Eng. A, Vol. 415, No.1-2, January 2006, pp. 286-290.
M. K. Tam, S. J. Pang and C. H. Shek, Corrosion behavior and glass-forming ability of Cu-Zr-Al-Nb alloys J. Non-Cryst. Solids, Vol. 353, No. 32-40, October 2007, pp. 3596-3599.
D. Zander, B. Heisterkamp and I. Gallino, “Corrosion resistance of Cu-Zr-Al-Y and Zr-Cu-Ni-Al-Nb bulk metallic glasses,” J. Alloys Compd., Vol. 434-435, No. 5, May 2007, pp. 234-236.
D. A. Jonse, “Principles and Prevention of Corrosion,” Printice-Hall, NJ, 1996.
Y. H. Liu, G. Wang, R. J. Wang, D. Q. Zhao, M. X. Pan and W. H. Wang, “Super plastic bulk metallic glasses at room temperature,” Science, Vol. 315, No. 3, March 2007, pp. 1385-1388.
A. Gebert, U. Kuehn, S. Baunack, N. Mattern and L. Schultz, “Pitting corrosion of zirconium-based bulk glass-matrix composites,” Mater. Sci. Eng. A, Vol. 415, No. 1, January 2006, pp. 242-249.
G. Kear, B. D. Barker and F. C. Walsh, “Electrochemical corrosion of unalloyed copper in chloride media–a critical review,” Corros. Sci., Vol. 46, No. 1, January 2004, pp. 109-135.
M. Chmielová, J. Seidlerová and Z. Weiss, “X-ray diffraction phase analysis of crystalline copper corrosion products after treatment in different chloride solutions,” Corros. Sci., Vol. 45, No. 5, May 2003, pp. 883-889.
A. V. Vvedenskii and S. N. Grushevskaya, “Kinetic peculiarities of anodic dissolution of copper and its gold alloys accompanied by the formation of insoluble Cu (I) products,” Corros. Sci., Vol. 45, No. 10, October 2003, pp. 2391-2413.
R. S. Copper and J. H. Bartlett, “Convection and film instability copper anodes in hydrochloric acid,” J. Electrochem. Soc., Vol. 105, No. 3, March 1958, pp. 109-116.
L. Stephenson and J. H. Bartlett, “Anodic behavior of copper in HCl,” J. Electrochem. Soc., Vol. 101, No. 11, November 1954, pp. 571-581.
D. Zander and U. K?ster, “Corrosion of amorphous and nanocrystalline Zr-based alloys,” Mater. Sci. Eng. A, Vol. 375-377, No. 7, July 2004, pp. 53-59.
E. Kunze (Ed.), “Koeeosion und Korrosionsschutz,” Wiley-VCH, Weinheim, Germany, 2001.
C. Qin, W. Zhang, H. Kimura, K. Asami and A. Inoue, “New Cu-Zr-Al-Nb bulk glassy alloys with high corrosion resistance,” Mater. Trans. JIM, Vol. 45, No. 6, June 2004, pp. 1958-1961.
H. Bala and S. Szymura, “Acid corrosion of amorphous and crystalline Cu-Zr alloys,” Appl. Surf. Sci., Vol. 35, No. 1, October 1988, pp. 41-51.