Corrosion and Oxide-Free Surfaces Probed by Surface Analysis

通过表面分析探测腐蚀和无氧化表面

• 批准号: 0453816
• 负责人: Peter M. Sherwood
• 金额: $ 25.51万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0453816&HistoricalAwards=false
• 关键词: Corrosion; Oxide; Free; Surfaces; Probed

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.

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与液体接触的活性金属的腐蚀。 使用厌氧和UHV传递电池方法，结合脱氧溶液中的直接磨损方法，制备无氧化物的金属表面，并暴露于磷酸盐和其他耐腐蚀覆盖层。 这些层，以及它们的形成和稳定性的机制，检查使用一系列的表面敏感的探针，主要是价带光电子能谱。 结合用于光谱分配的量子化学计算，这套工具提供了对腐蚀过程复杂化学的详细而强大的探测。 由于这一研究项目，这些工具正在向表面科学界广泛提供。 了解结构金属表面的腐蚀和氧化过程是一个具有重要经济意义的问题。 舍伍德教授和他在堪萨斯州立大学的同事们正在研究这一过程，他们使用各种工具来形成具有良好特征的氧化物和磷酸盐覆盖层，并使用光电子光谱方法对其进行分析。 这项工作承诺腐蚀和防腐的基本理解，重大的现实世界的问题。