AA5754铝合金表面磷酸锌层形成的研究

IF 1.2 4区材料科学 Q4 ELECTROCHEMISTRY

Transactions of The Institute of Metal Finishing Pub Date : 1998-01-01 DOI:10.1080/00202967.1998.11871185

I. Roy, H. Terryn, G. Goeminne

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引用次数: 7

摘要

摘要铝合金的锌磷化是一种转化处理，可用于汽车，以提高附着力和耐腐蚀性。本文研究了铝预处理对磷酸锌层形成的影响。用扫描电子显微镜(SEM)观察了脱脂、蚀刻和电抛光的AA5754铝表面磷酸锌层的生长情况。介绍了具有工业代表性的间歇式磷化工艺。铝的表面状况由预处理工艺的选择决定，对铝表面存在的磷酸锌晶体的数量和大小有影响。层的形成可分为起始和生长两个阶段。结果表明，磷化前的衬底条件对起始阶段影响较大。通过高灵敏度和高分辨率技术…

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Study of the Formation of Zinc Phosphate Layers on AA5754 Aluminium Alloy

SummaryZinc phosphating of aluminium alloys is a conversion treatment that can be used for automotive applications to improve the adhesion properties and the corrosion resistance. In this paper the influence of the aluminium pretreatment on the formation of the zinc phosphate layer is studied. The growth of the zinc phosphate layer was examined on degreased, etched and electropolished aluminium AA5754 surfaces, using a Scanning Electron Microscope (SEM). A batch phosphating procedure, representative for the industrial process, was introduced. The surface condition of the aluminium, determined by the selection of the pretreatment procedure, has an influence on the number and sizes of the zinc phosphate crystals present on the aluminium surface. The formation of the layer can be divided into two steps: the initiation and the growth. It is shown that especially the initiation step is influenced by the condition of the substrate prior to phosphating. By means of high sensitivity and high resolution techniques...

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来源期刊

Transactions of The Institute of Metal Finishing 工程技术-材料科学：膜

CiteScore

3.40

自引率

10.50%

发文量

审稿时长

3 months

期刊介绍： Transactions of the Institute of Metal Finishing provides international peer-reviewed coverage of all aspects of surface finishing and surface engineering, from fundamental research to in-service applications. The coverage is principally concerned with the application of surface engineering and coating technologies to enhance the properties of engineering components and assemblies. These techniques include electroplating and electroless plating and their pre- and post-treatments, thus embracing all cleaning pickling and chemical conversion processes, and also complementary processes such as anodising. Increasingly, other processes are becoming important particularly regarding surface profile, texture, opacity, contact integrity, etc.