US-Egypt Cooperative Research: New Sol-Gel Prepared Anti-Corrosion Thin Films for Aluminum Alloys and Composites

美埃合作研究：新型溶胶-凝胶法制备铝合金和复合材料防腐薄膜

• 批准号: 0318141
• 负责人: Darryl Butt
• 金额: $ 2.5万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0318141&HistoricalAwards=false
• 关键词: US; Egypt; Cooperative; Research; New

0318141ButtDescription: This award is to support a cooperative research project between Dr. Darryl Butt, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida and Dr. Adel Ismail, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt. The PIs will study new surface treatments based on cerium, vanadate, molybdate and permanganate compounds applied by sol-gel method as replacement of processes involving hexavalent chromium. Hexavalent chromium is a widely used corrosion barrier that is a known carcinogen. The corrosion protection provided by these new treatments will be evaluated using electrochemical impedance spectroscopy and polarization tests. The adhesion performance will be also measured using standard test methods. A series of specimens will be prepared under different experimental conditions such as rate of gelation, drying temperature and also, under different surface preparation prior to applying the treatment compounds. The viscosity and the time to convert sol into gel will be also investigated. The corrosion protection performance of the new coatings systems will be investigated under scratched and uniform coatings conditions. The adhesion performance will be also measured. The durability of the promising coating systems will be compared with a chromate-based coating system under severe conditions using the salt spray chamber test.Scope: The research results can have a significant impact in solving an engineering problem, that of protecting aluminum alloys and composites from corrosion. Replacement of toxic hexavalent chromium as a method of corrosion protection of Al alloys is of great importance in a very large number of applications. The results will lead to the gradual use of non-toxic materials as coatings for Al alloys and Al composites. There is clear identification of roles by the collaborating teams and both groups have experience with sol gels. The two institutes have the necessary facilities for this work. Students are expected to participate in the project and will develop an understanding for problems related to corrosion, interfaces, and processing techniques. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.

0318141 Butt描述：该奖项旨在支持佛罗里达盖恩斯维尔市佛罗里达大学材料科学与工程系Darryl Butt博士和埃及赫勒万市中央冶金研究与发展研究所（CMRDI）阿德尔伊斯梅尔博士之间的合作研究项目。研究人员将研究基于铈、钒酸盐、铬和高锰酸盐化合物的新表面处理方法，通过溶胶-凝胶法取代涉及六价铬的工艺。六价铬是一种广泛使用的腐蚀屏障，是一种已知的致癌物质。将使用电化学阻抗谱和极化测试来评估这些新处理提供的腐蚀保护。还将使用标准测试方法测量粘附性能。将在不同的实验条件下制备一系列样品，例如凝胶化速率、干燥温度，以及在施加处理化合物之前在不同的表面处理下制备。还将研究粘度和将溶胶转化为凝胶的时间。将在划痕和均匀涂层条件下研究新涂层系统的防腐蚀性能。还将测量粘附性能。有前途的涂层系统的耐久性将进行比较与铬酸盐基涂层系统在恶劣条件下使用盐雾室test.Scope：研究结果可以在解决工程问题，即保护铝合金和复合材料免受腐蚀的重大影响。 作为铝合金腐蚀防护的一种方法，替换有毒的六价铬在大量应用中具有重要意义。这一结果将导致无毒材料在铝合金和铝复合材料涂层中的逐步应用。 有明确的识别作用的合作团队和两个小组的经验与溶胶凝胶。 这两个研究所拥有开展这项工作的必要设施。学生将参与该项目，并将对与腐蚀，界面和加工技术相关的问题有所了解。 该项目得到了美国-埃及联合基金方案的支持，该方案向两国的科学家和工程师提供赠款，以开展这些合作活动。