Journal
APPLIED SURFACE SCIENCE
Volume 434, Issue -, Pages 787-795Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.11.012
Keywords
Magnesium alloy; Corrosion resistance; Layer-by-layer; Hydrogen bond; Spin-casting; Adhesion strength
Categories
Funding
- National Natural Science Foundation of China [51571134]
- Shandong Provincial Natural Science Foundation [ZR2017BEM002]
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A polyvinylpyrrolidone (PVP)/polyacrylic acid (PAA) layer-by-layer (LbL) assembled composite coating with a multilayer structure for the corrosion protection of AZ31 magnesium alloy was prepared by a novel spin-casting method. The microstructure and composition of this coating were investigated by means of SEM, XRD and FT-IR measurements. Moreover, electrochemical, immersion and scratch tests in vitro were performed to measure the corrosion performance and the adhesion strength. These results indicated that the (PVP/PAA) 10 composite coating with defect-free, dense and uniform morphologies could be successfully deposited on the surface of magnesium alloy. The coating had excellent corrosion resistance and adhesion strength. (C) 2017 Elsevier B.V. All rights reserved.
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