期刊
CORROSION SCIENCE
卷 176, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.109049
关键词
High pressure oxygen corrosion; Orientation of graphene; Anti-corrosion; Epoxy composite coating
资金
- National Science Foundation for Distinguished Young Scholars of China [51925403]
- Major Research plan of the National Natural Science Foundation of China [91934302]
- National Science Foundation of China [21676052, 21606042]
Herein, we designed a spin coating method and fabricated highly orientated graphene/epoxy (OG/EP) coating with long-term anti-corrosion performance. Surprisingly, the impedance at 0.01 Hz of OG/EP coating still remained at a relatively high value after 7 days of immersion in 3 MPa pure O-2 and 3.5 wt% NaCl coupling environment, which was about 10(3) and 8 x 10(5) times higher than pure epoxy (Spin-EP and Spray-EP) and randomly arranged graphene/epoxy coatings', respectively. The protection mechanism of OG/EP coating is interpreted as the orientation of graphene, maximizing the barrier effect of graphene and avoiding the formation of graphene conductive network.
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