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Crystallographic controlled dissolution and surface faceting in disordered face-centered cubic FePd

  • D. J. Horton (a1), A. W. Zhu (a1), J. R. Scully (a1) and M. Neurock (a2)

Abstract

Electrochemical dissolution by congruent oxidation of Fe Pd in 1 M HCl solution was strongly controlled by crystallographic orientation. Anodic dissolution was characterized over a wide variety of grain surface plane orientations providing a detailed view of the crystallographic nature of oxidative dissolution and surface facet evolution as a function of grain orientation. Near {100}-oriented grains retained low surface roughness after corrosion and low dissolution rates. Grains with orientation within 2° of {111} were also topographically smooth after dissolution and were nearly as corrosion resistant as {100} grains. Overall dissolution depth depended linearly on crystallographic angle within 40° of {100} and within 10° of {111} planes. Post-corrosion surface faceting and dissolution were substantially increased at grain orientations near {110} and were highest between 10° and 20° from the {111} plane normal. Grains at these crystallographic angles roughened during oxidative dissolution by forming complex semi-periodic topographies. These finely spaced arrays of terraces and ledges likely consisted of combinations of more corrosion resistant low-index planes. Therefore, the overall corrosion depth within a grain possessing an initially irrational crystal orientation was determined by the amount of dissolution required to expose new, slowly dissolving surface facets with low-index orientations. Computations of Fe–Pd alloy surface energies and surface atom coordination as a function of crystal orientation are utilized to help support this explanation.

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Corresponding author

Address all correspondence to D. J. Horton atdh7h@virginia.edu

References

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1.Fushimi, K., Miyamoto, K., and Konno, H.: Anisotropic corrosion of iron in pH 1 sulphuric acid. Electrochim. Acta 55, 7322 (2010).
2.Holme, B., Ljones, N., Bakken, A., Lunder, O., Lein, J.E., Vines, L., Hauge, T., Bauger, O., and Nisancioglu, K.: Preferential grain etching of AlMgSi(Zn) model alloys. J. Electrochem. Soc 157, C424 (2010).
3.Koroleva, E.V., Thompson, G.E., Skeldon, P., and Noble, B.: Crystallographic dissolution of high purity aluminium. Proc. R. Soc. A 463, 1729 (2007).
4.Lillard, R.S., Wang, G.F., and Baskes, M.I.: The role of metallic bonding in the crystallographic pitting of magnesium. J. Electrochem. Soc. 153, B358 (2006).
5.Sugiyama, M., Harada, S., and Oshima, R.: Change in Young modulus of thermoelastic martensite Fe-Pd alloys. Scr. Metall. Mater. 19, 315 (1985).
6.Davis, B.W., Moran, P.J., and Natishan, P.M.: Metastable pitting behavior of aluminum single crystals. Corros. Sci. 42, 2187 (2000).
7.Schreiber, A., Schultze, J.W., Lohrengel, M.M., Karman, F., and Kalman, E.: Grain dependent electrochemical investigations on pure iron in acetate buffer pH 6.0. Electrochim. Acta 51, 2625 (2006).
8.Shahryari, A., Szpunar, J.A., and Orrianovic, S.: The influence of crystallographic orientation distribution on 316LVM stainless steel pitting behavior. Corros. Sci. 51, 677 (2009).
9.Treacy, G.M. and Breslin, C.B.: Electrochemical studies on single-crystal aluminium surfaces. Electrochim. Acta 43, 1715 (1998).
10.Yasuda, M., Weinberg, F., and Tromans, D.: Pitting corrosion of Al and Al–Cu single-crystals. J. Electrochem. Soc 137, 3708 (1990).
11.Gentile, M., Koroleva, E.V., Skeldon, P., Thompson, G.E., Bailey, P., and Noakes, T.C.Q.: Influence of grain orientation on zinc enrichment and surface morphology of an Al-Zn alloy. Surf. Interface Anal. 42, 287 (2010).
12.Konig, U. and Davepon, B.: Microstructure of polycrystalline Ti and its microelectrochemical properties by means of electron-backscattering diffraction (EBSD). Electrochim. Acta 47, 149 (2001).
13.Lill, K.A.: Electrochemical Investigations on the Corrosion Properties of New Classes of Lightweight Steels, in Chemistry (Max-Planck-Institut für Eisenforschung, Düsseldorf, 2008), p. 123.
14.Bunge, H.J.: Texture Analysis in Materials Science: Mathematical Methods, English ed. (Butterworths, London, Boston, 1982).
15.Santo, C.E., Lam, E.W., Elowsky, C.G., Quaranta, D., Domaille, D.W., Chang, C.J., and Grass, G.: Bacterial killing by dry metallic copper surfaces. Appl. Environ. Microbiol. 77, 794 (2011).
16.Grochola, G., Russo, S.P., Yarovsky, I., and Snook, I.K.: “Exact” surface free energies of iron surfaces using a modified embedded atom method potential and lambda integration. J. Chem. Phys. 120, 3425 (2004).
17.Zhang, J.-M., Ma, F., and Xu, K.-W.: Calculation of the surface energy of FCC metals with modified embedded-atom method. Appl. Surf. Sci. 229, 34 (2004).
18.Lohrengel, M.M., Schreiber, A., and Rosenkranz, C.: Grain-dependent anodic dissolution of iron. Electrochim. Acta 52, 7738 (2007).
19.Mackenzie, J.K., Moore, A.J.W., and Nicholas, J.F.: Bonds broken at atomically flat crystal surfaces—I: face-centred and body-centred cubic crystals. J. Phys. Chem. Solids 23, 185 (1962).
20.Nicholas, J.: Calculation of surface energy as a function of orientation for cubic crystals. Austr. J. Phys. 21, 21 (1968).
21.Ives, M.B.: On kink kinetics in crystal dissolution. J. Phys. Chem. Solids 24, 275 (1963).
22.Howe, J.M.: Interfaces in Materials: Atomic Structure, Thermodynamics and Kinetics of Solid-vapor, Solid-liquid and Solid-solid Interfaces (Wiley, New York, 1997).
23.Heyraud, J.C. and Metois, J.J.: Equilibrium shape and temperature—lead on graphite. Surf. Sci. 128, 334 (1983).
24.McLean, M.: Determination of the surface energy of copper as a function of crystallographic orientation and temperature. Acta Metall. Mater. 19, 387 (1971).
25.Valette, G., Hamelin, A., and Parsons, R.: Specific adsorption on silver single-crystals in aqueous-solutions. Z. Phys. Chem. Neue. Fol. 113, 71 (1978).

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