NSF Young Investigator

NSF 青年研究员

• 批准号: 9357463
• 负责人: John Scully
• 金额: $ 31.25万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9357463&HistoricalAwards=false
• 关键词: NSF; Young; Investigator

9357463 Scully Factors controlling the passivity and corrosion of intermetallic compounds in aqueous solutions are examined using nickel aluminides and titanium aluminides as model systems. A parallel investigation is pursued on intergranular separation in polycrystalline metallic materials using bond percolation theory. Model materials are available from industry and also can be prepared by rapid solidification, co-sputter deposition, or ion implantation. Structure and composition are characterized by scanning electron microscopy and X-ray diffraction and electrochemical properties characterized by several techniques, including AC and DC electrochemistry and solution analysis. %%% Corrosion and passivity mechanisms are unclarified for emerging structural intermetallic materials proposed for structural applications as well as those formed in microelectronic processing. This research should clarify these mechanisms and lead to procedures for predicting electrochemical properties. ***

小行星9357463 以铝化镍和铝化钛为模型体系，研究了金属间化合物在水溶液中钝化和腐蚀的控制因素。 采用键逾渗理论对多晶金属材料的晶间分离进行了平行研究。 模型材料可以从工业上获得，也可以通过快速凝固、共溅射沉积或离子注入来制备。 结构和组成的特点是通过扫描电子显微镜和X射线衍射和电化学性能的几种技术，包括交流和直流电化学和溶液分析。 %%% 腐蚀和钝化机制是不明确的新兴结构金属间化合物材料提出的结构应用，以及在微电子加工中形成的。 这项研究应该澄清这些机制，并导致预测电化学性能的程序。 ***