Application of selective dissolution of intermetallic particles on aluminum surface as a surface treatment

金属间化合物颗粒选择性溶解在铝表面作为表面处理的应用

基本信息

批准号：
10650698
负责人：
OSAMI Seri
金额：
$ 2.24万
依托单位：
Muroran Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650698/
关键词：
Aluminum Intermetallic compound Selective dissolution Recycle Surface treatment 不純物元素

项目摘要

It is well known that the more FeAlィイD23ィエD2 intermetallic compound particles usually exhibited on aluminum are more detrimental to corrosion. Since this iron element hardly dissolves in aluminum matrix as a solid solution, iron forms an intermetallic compound such as FeAlィイD23ィエD2, and disperses in the matrix. An effective surface treatment, by which preferential removal of FeAlィイD23ィエD2particles from the aluminum surface can proceed, has been investigated. A proposed treatment is the electrochemical surface treatment that the specimen is kept in the potential of-2.0V vs.Ag/AgCl for 1000s and quickly then held at the potential of 0.0V vs.Ag/AgCl for more over 1000s in 0.1kmol ・ mィイD1-3ィエD1 Al(NOィイD23ィエD2)ィイD23ィエD2 solution. Appreciable FeAlィイD23ィエD2-particle-ftee surface was obtained by this treatment. Furthermore, in order to get a perfect particle-free surface of the aluminum matrix, a simple and effective electrochemical treatment, by which selective removal of FeAlィイD23ィエD2can proceed, has been developed in trial and error. It is found that FeAlィイD23ィエD2-free surface is obtained by a cathodic treatment (-2.0V vs.Ag/AgCl for more than 1000s) in 17mass% HNOィイD23ィエD2 solution as the one of most successful techniques. We obtained perfect compound-free aluminum surface by this method. Mentioning above proposed the one of the effective surface treatment technologies and will help the aluminum recycle system when the recycle aluminum will be used from the cascade-use to the proper use (so-called products-to-products use).

众所周知，通常在铝上暴露的金属层间化合物颗粒越多地对腐蚀更有害。由于该铁元件几乎不溶于铝基质作为固体溶液，因此铁形成金属间化合物，例如fealili d23e d2，并分散在基质中。已经研究了一种有效的表面处理，通过该处理可以进行从铝表面进行优选去除菲尔利D23E D2颗粒。提出的治疗方法是电化学表面处理方法，即标本保持在2.0v vs.ag/agcl的潜力中，为1000s，然后迅速保持0.0V vs.ag/agcl的潜力，在0.1kmol ・MII ・MII ・MII d1-3i d1 d1 d1 al（NOI D23I D2 D2 D2）II D23I D23I D2 d2 d2 d2 d2 d2 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d1 d2。通过这种处理获得了可观的feal d23i d2-particer-ftee表面。此外，为了获得铝基质的完美无颗粒表面，可以在试验和误差中开发了一种简单有效的电化学处理，可以选择性地去除菲尔利D23IE D2。发现在17mass％HNOI D23IE D2溶液中，通过阴极处理（-2.0V vs.ag/agcl）获得feali d23ie d2的表面（-2.0v vs.ag/agcl）作为最成功的技术之一。我们通过这种方法获得了完美的无化合物铝表面。上面提到的提出了一种有效的表面处理技术之一，并将帮助铝回收系统当回收铝从喀斯喀特使用到适当使用（所谓的产品到产品的使用）时，将帮助铝回收系统。