U.S.-Korea Cooperative Research on Passivating Film Forma- tion on Aluminum and on Tungsten Studied by Beam Deflection and Abrading Electrode Techniques

小行星9307995 该奖项提供资金，允许理查德博士。Oriani，明尼苏达大学双城分校腐蚀研究中心，与韩国科学技术高等研究院（KAIST）材料科学与工程系的Su-Il Pyun博士合作开展为期24个月的项目，研究铝和钨表面钝化氧化膜的性质和形成机制。 两个重要的测量，即（1）钝化动力学和（2）在膜形成期间产生的机械应力，将在各种电解质组合物和各种电位-时间条件下进行。 在金属腐蚀过程中，在金属表面上产生的氧化膜大大降低了随后的腐蚀速率。 在铝和钨的情况下，这种耐腐蚀性是由于形成了一层薄的钝化氧化膜。 已知的是，形成动力学和膜特性随着电解质溶液化学性质和产生膜的电势而变化。 这项研究的结果可能会产生一个更好的理解腐蚀和钝化过程，防止进一步的腐蚀。 合作者是该提案领域备受尊敬的研究人员。 该项目与美国的目标有关-韩国合作科学计划，旨在通过科学信息，思想，技能和技术的交流以及通过互利问题的合作来提高美国和韩国科学家和工程师之间的合作水平。 韩国对该项目的参与得到了韩国科学和工程基金会的支持。 这个项目增加了一个国际合作的层面，PI的研究下，美国国家科学基金会批准号DMR-9111673。 ***

9307995 Oriani This award provides funds to permit Dr. Richard A. Oriani, Corrosion Research Center, University of Minnesota-Twin Cities, to pursue with Dr. Su-Il Pyun, Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), for 24 months, a program of cooperative research on the properties and mechanism of formation of passivating oxidic films on aluminum and on tungsten. Two important measurements, namely, (1) the kinetics of passivation and (2) the mechanical stress generated during film formation will be made in various electrolyte compositions and with various potential-time conditions. Oxidic films produced upon metal surfaces during corrosion of metals strongly reduce the rate of subsequent corrosion. This corrosion resistance in the case of aluminum and tungsten results from the formation of a thin passivating oxidic film. It is known that the formation kinetics and film characteristics vary with the electrolyte solution chemistry and the electrical potential at which the film is generated. Results of this research may produce a better understanding of corrosion and passivation processes that prevent further corrosion. The collaborators are highly respected researchers in the field of the proposal. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit. Korean participation in the project is supported by the Korea Science and Engineering Foundation (KOSEF). This project adds an international cooperative dimension to the PI's research under NSF Grant No. DMR-9111673. ***