Long-term deterioration of lubricant-infused nanoporous anodic aluminium oxide surface immersed in NaCl solution
Dequan Wu 1Lingwei Ma 1Bei Liu 1Dawei Zhang 1Badar Minhas 1Hongchang Qian 1Herman A.Terryn 2Johannes M.C.Mol3
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作者信息
1. Beijing Advanced Innovation Centre for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
2. Department of Materials and Chemistry, Research Group Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium;Department of Materials Science and Engineering, Delft University of Technology, Delft, the Netherlands
3. Department of Materials Science and Engineering, Delft University of Technology, Delft, the Netherlands
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Abstract
This study investigated the deterioration of a lubricant-infused anodic aluminium oxide surface in a 1 M NaGl solution for ～200 days.Direct observation by cryo-SEM and quantitative analyses by UV spectroscopy and EIS revealed that the long-term deterioration of the lubricant-infused surface was divided into two stages: the surface-adhered lubricant layer gradually dissolved at a constant rate until the substrate was exposed;afterwards the lubricant infused in the nanochannels began to diffuse and was depleted after ～200 days.The EIS results also revealed that the defects reduced the corrosion resistance of the lubricant-infused surface considerably.
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