Materials World Network: Local Surface Chemistry and Atmospheric Corrosion of Cu-Zn Alloys

材料世界网：铜锌合金的局部表面化学和大气腐蚀

• 批准号: 0856009
• 负责人: Steven Baldelli
• 金额: $ 39万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-12-15 至 2013-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0856009&HistoricalAwards=false
• 关键词: Materials; World; Network; Local; Surface

This award by the Division of Materials Research to University of Houston is to study the role of microscopic heterogeneities in the corrosion of metal alloy surfaces. This Materials World Network award is cofounded and managed by the Metals and Metallic Nanostructures program. This proposed research involves the use nonlinear optical spectroscopy and scanning probe techniques to study the atmospheric corrosion of a model metal alloy surface based on Cu:Zn alloy. Main objectives of the project are: 1) Study the local atmospheric corrosion of Cu:Zn alloys; and 2) Compare the reactions on protected alloys surfaces with the initiation of corrosion reactions. To probe local regions of the alloy surface, Sum Frequency Generation Imaging Microscopy will be used as a local probe on the surface species formed under reaction conditions. This technique has the ability to identify sub-monolayer of surface adsorbates based on their vibrational spectra. In addition, Scanning Electrochemical Microscopy will be used to identify cathodic and anodic regions of the surfaces where the corrosion process occurs. These techniques will be applied to bare and protected surfaces to study the effect of inhibition on local corrosion. These studies will be carried out in collaboration with scientists at Royal Institute of Technology, Stockholm, Sweden. The results from these studies are expected to provide chemical maps of corrosion activity related to molecular speciation in those locations, and thus a molecular-level description of local corrosion events. Students on this project will be developing experimental and scientific skills through designing of the research project, and writing and presenting results at national meetings. International exchange, travel, research experience by students and faculty in the collaborating institutions are salient features of this collaborative multidisciplinary research.This multidisciplinary research program is expected to positively impact both undergraduate and graduate student members of the research team In addition, students will be exposed to in the use and application of a number of analytical methods including advanced spectroscopic methods to study the atmospheric corrosion at the surface. They also will be trained in material surface characterization with an emphasis on the chemistry of corrosion at a microscopic level. Finally, this project will greatly enhance our younger scientist skills and development using modern laser techniques. The knowledge gained will provide a detailed model on the local chemistry of corrosion that has been very difficult to characterize until now. The planned International collaboration with Royal Institute of Technology in Sweden will provide opportunities for students and faculty to do research in the collaborating laboratories.

该材料研究部授予休斯顿大学的奖项是研究微观异质性在金属合金表面腐蚀中的作用。 该材料世界网络奖是由金属和金属纳米结构计划共同管理和管理的。这项提出的研究涉及使用非线性光谱和扫描探针技术来研究基于Cu：Zn合金的模型金属合金表面的大气腐蚀。该项目的主要目标是：1）研究Cu：Zn合金的局部大气腐蚀； 2）比较受保护合金表面的反应与腐蚀反应的启动。为了探测合金表面的局部区域，总和频率产生显微镜将用作在反应条件下形成的表面物种上的局部探针。 该技术可以根据其振动光谱鉴定表面吸附物的亚单层。此外，扫描电化学显微镜将用于识别发生腐蚀过程的表面的阴极和阳极区域。这些技术将应用于裸露和受保护的表面，以研究抑制对局部腐蚀的影响。这些研究将与瑞典斯德哥尔摩皇家理工学院的科学家合作进行。这些研究的结果有望提供与这些位置分子形成相关的腐蚀活性的化学图，从而提供了局部腐蚀事件的分子级描述。 该项目的学生将通过设计研究项目来发展实验和科学技能，并在国家会议上写作和呈现结果。国际交流，旅行，学生和教师在合作机构中的研究经验是这项合作的多学科研究的重要特征。预计，本多学科研究计划有望对本科生和研究团队的研究生成员的研究团队进行积极影响，并且学生还将在包括高级精神上的分析方法中使用和应用多个分析方法，包括学生的使用和应用。它们还将接受材料表面表征的训练，重点是微观水平的腐蚀化学。 最后，该项目将通过现代激光技术极大地增强我们年轻的科学家技能和发展。 所获得的知识将提供有关腐蚀局部化学的详细模型，直到现在一直很难表征。计划的与瑞典皇家理工学院的国际合作将为学生和教师提供合作实验室研究的机会。