Functional Imaging and Microvisualization of Localized Corrosion Sites on Metal

金属局部腐蚀部位的功能成像和显微可视化

• 批准号: 9816404
• 负责人: William Smyrl
• 金额: $ 31.54万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816404&HistoricalAwards=false
• 关键词: Functional; Imaging; Microvisualization; Localized; Corrosion

9816404 Smyrl The objective of this renewal grant is to exploit the microscopic techniques developed in a previously funded effort for high resolution, topographic imaging with concurrent optical, electrochemical, photoelectrochemical, and fluorescence mapping. The techniques are based on novel modifications of the Near Field Optical Scanning Microscope (NSOM, Topometrix) to obtain shear force feedback control with a piezoelectric tuning fork. In the past work resolutions were achieved for the above functional microscopies at or just below 100 nm. This effort extends the resolution to 10 nm or below. The precursor sites leading to pitting corrosion are explored on high purity titanium and on aluminum alloys. This should facilitate in situ and ex situ evaluation of surface treatments to mitigate pitting corrosion. A second objective uses the high-resolution capabilities of the instrumentation to identify corrosion of microstructured microelectronic and magnetic storage assemblies. %%%As the dimension of these materials decrease, corrosion becomes increasingly important, and techniques to explore heterogeneous surfaces are needed. Scanning electrochemical microscopy with concurrent topographic mapping is an excellent technique being developed for these studies.***

9816404 Smyrl该更新补助金的目的是利用在以前资助的高分辨率，地形成像与并发光学，电化学，光电化学和荧光绘图的努力开发的显微技术。 该技术是基于近场光学扫描显微镜（NSOM，拓扑）的新修改，以获得剪切力反馈控制与压电音叉。 在过去的工作中，上述功能显微镜的分辨率达到或略低于100 nm。 这一努力将分辨率扩展到10 nm或更低。 探索了高纯钛和铝合金上导致点蚀的前体部位。 这将有助于现场和非现场评估表面处理，以减轻点蚀。 第二个目标是利用仪器的高分辨率能力来识别微结构微电子和磁存储组件的腐蚀。 %随着这些材料尺寸的减小，腐蚀变得越来越重要，需要探索异质表面的技术。 扫描电化学显微镜与同步地形图是一个很好的技术正在开发这些研究。