Corrosion and Oxidation Studied by Surface Analytical Methods

该研究项目由分析和表面化学项目支持，重点研究铁和铝基材料腐蚀的详细机制。各种表面分析探针被用于腐蚀膜的原子水平表征，特别是x射线光电子能谱（XPS）、分析电子显微镜和x射线衍射。这些方法用于识别反应中间体，并提出这些材料腐蚀的机制。利用价带XPS，结合电子结构计算来识别特定的表面物质，为这些研究中的中间产物的鉴定和机制的阐明提供了一个独特而有力的工具。更好地了解腐蚀机制和过程对于减轻腐蚀至关重要，这是一个严重的环境和经济问题。利用电子能谱工具来识别和表征腐蚀产物和过程是本研究项目的重点。铁铝基材料的腐蚀是一个严重的技术问题，在许多方面影响着民用基础设施和环境的质量。对腐蚀过程的清晰理解将对设计缓蚀和缓释策略非常有用。

This research project, supported by the Analytical and Surface Chemistry Program, focusses on the detailed mechanisms of corrosion of iron and aluminum based materials. A variety of surface analytical probes are brought to bear on the atomic level characterization of corrosion films, especially X-ray photoelectron spectroscopy (XPS), analytical electron microscopy, and X-ray diffraction. These methods are used to identify reaction intermediates, and to suggest mechanisms for corrosion of these materials. The use of valence band XPS, in combination with electronic structure calculations to identify specific surface species, provides a unique and very powerful tool for the identification of intermediates and elucidation of mechanisms in these studies. A better understanding of corrosion mechanisms and processes is crucial to the mitigation of corrosion, which is of serious environmental and economic concern. The use of electron spectroscopic tools to identify and characterize corrosion products and processes is the focus of this research project. Corrosion of iron and aluminum based materials is a serious technological problem, impacting the quality of the civil infrastructure and the environment in many ways. A clear understanding of the process of corrosion would be very useful in designing strategies for corrosion inhibition and mitigation.