Corrosion and Oxide-Free Surfaces Probed by Surface Analysis

在分析和表面化学项目的支持下，舍伍德教授和他在堪萨斯州立大学的同事们正在探索活性金属与液体接触时的腐蚀。使用厌氧和特高压转移电池方法，再加上脱氧溶液中的直接磨损方法，制备了无氧化物金属表面并将其暴露于磷酸盐和其他耐腐蚀涂层中。这些层及其形成和稳定性的机制使用一系列表面敏感探针进行了检查，主要是价带光电子能谱。结合量子化学计算的光谱分配，这套工具为腐蚀过程的复杂化学过程提供了详细而强大的探测。作为这个研究项目的结果，这些工具正在广泛地提供给地表科学界。了解结构金属表面的腐蚀和氧化过程是一个至关重要的经济问题。舍伍德教授和他在堪萨斯州立大学的同事们正在使用多种工具研究这一过程，这些工具可以形成具有良好特征的氧化物和磷酸盐覆盖层，并使用光电子能谱方法进行分析。这项工作保证了对腐蚀和防腐的基本理解，这是现实世界中重要的问题。

With the support of the Analytical and Surface Chemistry Program, Professor Sherwood and his coworkers at Kansas State University are exploring the corrosion of reactive metals in contact with liquids. Using anaerobic and UHV transfer cell methods, coupled with direct abrasion methods in deoxygenated solutions, oxide free metal surfaces are prepared and exposed to phosphate and other corrosion resistant overlayers. These layers, and the mechanisms of their formation and stability, are examined using a range of surface sensitive probes, principally valence band photoelectron spectroscopy. Coupled with quantum chemistry calculations for spectral assignment, this suite of tools provides a detailed and powerful probe of the complex chemistry of the corrosion process. These tools are being made widely available to the surface science community as a result of this research project. Understanding the process of corrosion and oxidation on structural metal surfaces is an issue of vital economic importance. Professor Sherwood and his colleagues at Kansas State University are studying this process using a variety of tools that allow the formation of well-characterized oxide and phosphate overlayers, and their analysis using photoelectron spectroscopic methods. This work promises a fundamental understanding of corrosion and corrosion prevention, significant real-world problems.