期刊
PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
卷 27, 期 3, 页码 326-328出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.pnsc.2017.04.016
关键词
Graphene oxide; in-situ reduction; Polyvinyl alcohol; Composite coatings; Corrosion resistance
资金
- National Natural Science Foundation of China [51475447]
A simple and feasible method was developed to fabricate in-situ reduced graphene oxide-polyvinyl alcohol composite (GO-PVA) coatings as protective layers on magnesium substrates. Polyvinyl alcohol was used as an in-situ reductant to transform GO into reduced GO. Contiguous and uniform GO-PVA coatings were prepared on magnesium substrates by dip-coating method, and were further thermally treated at 120 degrees C under ambient condition to obtain in-situ reduced GO-PVA coatings. Owing to the reducing effect of PVA, thermal treatment at low temperature led to effective in-situ reduction of GO as confirmed by XRD, Raman, FTIR and XPS tests. The corrosion current density of magnesium substrates in 3.5 wt% NaCl solution could be lowered to its 1/25 when using in-situ reduced GO-PVA coatings as protective layers.
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