涂层
腐蚀
材料科学
衍射仪
聚乙烯吡咯烷酮
镁合金
化学工程
扫描电子显微镜
模拟体液
镁
图层(电子)
X射线光电子能谱
傅里叶变换红外光谱
逐层
冶金
合金
复合材料
高分子化学
工程类
作者
Lan-Yue Cui,Xiaohui Fang,Wei Cao,Rong‐Chang Zeng,Shuoqi Li,Xiaobo Chen,Yuhong Zou,Shaokang Guan,En–Hou Han
标识
DOI:10.1016/j.apsusc.2018.06.240
摘要
A (polyvinylpyrrolidone (PVP)/deoxyribonucleic acid (DNA))n coating was fabricated via layer-by-layer (LbL) assembly dip coating method. The surface morphologies, chemical compositions and corrosion resistances of the coatings were investigated using field-emission scanning electron microscopy, X-ray photoelectron spectrometer, Fourier transform infrared, X-ray diffractometer and electrochemical and hydrogen evolution measurements. The results indicated that the (PVP/DNA)n coating shows a smooth surface with shallow scratches and some corrosion cracks, which possesses a good corrosion resistance in simulated body fluid, especially for n = 20. The (PVP/DNA)n coating can be used as a inducer to construct a biomimetic biocompatible Ca-P coating on Mg alloys. Additionally, we suggest and discuss a corrosion mechanism for the coating.
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