AVS 47th International Symposium
    Surface Science Tuesday Sessions
       Session SS-TuP

Paper SS-TuP6
Electrochemical Characterization and Surface Analysis of Bulk Amorphous Alloys in Aqueous Solutions at Different pH

Tuesday, October 3, 2000, 5:30 pm, Room Exhibit Hall C & D

Session: Poster Session
Presenter: D.L. Cocke, Lamar University
Authors: D.L. Cocke, Lamar University
D.G. Naugle, Texas A&M University
H. McWhinney, Prairie View A&M University
R. Schennach, Lamar University
Correspondent: Click to Email
Bulk amorphous alloys are a new class of materials with a variety of characteristics that make them useful for applications in aqueous environments. While some bulk amorphous metals show increased corrosion resistance, there is still a lack of fundamental electrochemical studies of these materials. Three different compositions of BeCuNiTiZr bulk amorphous alloys have been studied at pH 5, 7 and 8 using Cyclic Voltammetry (CV), X-ray Photoelectron Spectroscopy (XPS) and electron microscopy. While XPS is used to determine the composition of the resulting oxide films, the CV curves are compared to the corresponding binary alloys, to pinpoint differences in the corrosion resistance of the amorphous multi-component alloy. The effect of the amorphizity, multi-component structure and the presence of elements with widely varying interfacial reactivities will be discussed.