This study proposes a facile solution process to generate a reduced graphene oxide (rGO) protection layer on Al, in which polyvinyl alcohol (PVA) is used to enhance interfacial bonding between Al and rGO. A multi-level analysis indicated that PVA-aided coating induced numerous conjugations between Al and rGO by producing a large number of hydroxyl groups on the Al surface. The Al plate directly coated by rGO showed good corrosion resistance compared with the pristine Al, implying that rGO may act as an effective corrosion barrier for Al. Moreover, the Al coated by the PVA-aided process exhibited higher corrosion resistance than the directly coated Al as well as the pristine Al due to the enhanced adhesion between Al and rGO.
Bibliographical noteFunding Information:
H. Choi acknowledges the support from the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2009-0093814) and the support from the Leading Foreign Research Institute Recruitment Program through the NRF funded by the Ministry of Science, ICT & Future Planning (MSIP) (2013K1A4A3055679). This work was also supported by the National Research Foundation of Korea (NRF) Grant funded by the Korean Government (MSIP, 2015R1A5A7037615). The research is also partially supported by the KIST Institutional Program (2V04081) for the micro structural analysis.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films