期刊
SURFACE ENGINEERING
卷 25, 期 8, 页码 612-614出版社
TAYLOR & FRANCIS LTD
DOI: 10.1179/174329408X305365
关键词
Zn-Al-Mg-RE coating; Corrosion; Artificial defects; Organic coatings
资金
- National Key Laboratory for Remanufacturing, Beijing, China [51489020304js910]
- WeiGai Project, Beijing, China [2003WG10]
A general mechanism of corrosion degradation of organic coatings overlaid on Al and Zn-Al-Mg-RE (rare earth) coatings was investigated. The metallic coatings were prepared by the high velocity arc spraying (HVAS) technology. Artificial defects were introduced in the organic coatings and the samples were immersed in 5 wt-% NaCl aqueous solution. After 430 h, the different microstructures of corrosion products in the defects were studied by scanning electron microscopy. The microstructure of corrosion products of the HVAS Zn-Al-Mg-RE coating was more compact than that of the HVAS Al coating. The compact corrosion products were better barriers against chloride ions and water permeation, and the defects in the system were blocked by the corrosion products.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据