Atom scale structure and minor solute exert strong effects on the corrosion properties of ideal solid solution alloys The effects of structural (order – disorder transformation, relaxation), chemical (solute clusters, minor solute elements) and structural+chemical defects (solute rich and lean nanocrystals in an amorphous solid solution) on corrosion are investigated using model alloys. Disordered and ordered crystalline Fe 50 Pd 50 : The disordered structure has strong grain orientation dependent dissolution over long times [1] which is morphologically different than after ordering [2]. The ordered surface initially shows crystallographic dissolution but at longer exposure durations only limited crystal dependence is apparent. This highlights a strong effects of neighbor atoms & bond length. Amorphous Cu 75 Hf 20 Dy 05 [3] undergoes Hf selective dissolution in hydrofluoric acid and subsequent reorganization to form nanoporous fcc Cu much more quickly than its single phase crystalline solid solution counterpart. These results show that the ordered structure hinders surface diffusion of Cu compared to the amorphous variant, thereby slowing surface reorganization and inhibiting porosity formation. Corrosion Mechanisms in Amorphous Solid Solution Alloys: Role(s) of Minor Alloying Elements Corrosion Mechanisms in Amorphous Solid Solution Alloys: Role(s) of Minor Alloying Elements John R. Scully, University of Virginia Main Campus, DMR [1] disordered fcc Fe 50 Pd s {100} {111} [2] ordered pT Fe 50 Pd s 2500 s 400 s Key result: Dissolution linearly dependent on plane normal angle from {100} and {111} Key Result: Hf diss. occurs more readily from amorphous structure. Ordered structure inhibits surface diffusion of Cu. [3] Amorphous vs. Crystalline Cu 75 Hf 20 Dy disordered ordered Compositional ordering Slight lattice expansion Amorphous Crystalline Cu Cu 75 Hf 20 Dy

Corrosion Education 3 high school students (M. Fox, S. Gorsch, L. Scully), 3 Undergraduates (H. Bindig, W. McCarthy, A. Nguyen), 3 graduate students (T. Aburada, N. Tailleart, D. Horton), and 1 post-doctoral researchers (H. Ha) contributed to this NSF-supported project. Graduate & undergraduate courses in corrosion taught both in class and via distance learning (both MSE 7080 and MSE 3080) for Made-in-Virginia for Engineers that bring engineering education to workers. John R. Scully served on National Academy Study on Research Opportunities In Corrosion (ROCSE). (Fall 2010). Corrosion Video distributed Corrosion Education 3 high school students (M. Fox, S. Gorsch, L. Scully), 3 Undergraduates (H. Bindig, W. McCarthy, A. Nguyen), 3 graduate students (T. Aburada, N. Tailleart, D. Horton), and 1 post-doctoral researchers (H. Ha) contributed to this NSF-supported project. Graduate & undergraduate courses in corrosion taught both in class and via distance learning (both MSE 7080 and MSE 3080) for Made-in-Virginia for Engineers that bring engineering education to workers. John R. Scully served on National Academy Study on Research Opportunities In Corrosion (ROCSE). (Fall 2010). Corrosion Video distributed (Title) II Name, Institution, DMR Award# Spatio-temporal Chaos in Systems of Broken Symmetry Eberhard Bodenschatz, Cornell University, DMR Award# Outreach NanoDays participation with nano-scale corrosion applications at local schools and museums cKITs (a set of corrosion experiments) purchased from National Association of Corrosion Engineers supplied to local K-12 schools Materials science and engineering demonstrations and lab tours are given in UVa MSE to foster an interest in the physical sciences and materials science.Outreach NanoDays participation with nano-scale corrosion applications at local schools and museums cKITs (a set of corrosion experiments) purchased from National Association of Corrosion Engineers supplied to local K-12 schools Materials science and engineering demonstrations and lab tours are given in UVa MSE to foster an interest in the physical sciences and materials science. CORROSION MECHANISMS IN AMORPHOUS ALLOYS: CRITICAL COMPOSITIONAL AND STRUCTURAL DEFECTS FOR LOCAL CORROSION CORROSION MECHANISMS IN AMORPHOUS ALLOYS: CRITICAL COMPOSITIONAL AND STRUCTURAL DEFECTS FOR LOCAL CORROSION John R. Scully, University of Virginia Main Campus, DMR Awards and Honors Nicole Tailleart, John R. Scully: Inaugural Award Recipients of the Corrosion Journal Best Paper Award, "User-selectable Barrier, Sacrificial Anode, and Active Corrosion Inhibiting Properties of Al-Co-Ce Alloys for Coating Applications." NACE Inter. Conference, UVA's Center for Electrochemical Science and Engineering received the 2009 NACE Distinguished Organization Award John R. Scully: received the H.H. Uhlig Award, 2009 of the Electrochemical Society for excellence in corrosion research. Tomohiro Aburada was one of twelve invited students internationally to present at Gordon Research Seminar, New London, NH H. Bindig Runner-up in the 2011 Individual Undergraduate Research and Design Symposium selected from 1300 graduating UVA engineers Awards and Honors Nicole Tailleart, John R. Scully: Inaugural Award Recipients of the Corrosion Journal Best Paper Award, "User-selectable Barrier, Sacrificial Anode, and Active Corrosion Inhibiting Properties of Al-Co-Ce Alloys for Coating Applications." NACE Inter. Conference, UVA's Center for Electrochemical Science and Engineering received the 2009 NACE Distinguished Organization Award John R. Scully: received the H.H. Uhlig Award, 2009 of the Electrochemical Society for excellence in corrosion research. Tomohiro Aburada was one of twelve invited students internationally to present at Gordon Research Seminar, New London, NH H. Bindig Runner-up in the 2011 Individual Undergraduate Research and Design Symposium selected from 1300 graduating UVA engineers H. Bindig, Runner-up – 2011 Individual Undergraduate Research and Design Symposium