Complete long-term corrosion protection with chemical vapor deposited graphene

Abstract

Despite the numerous reports on the topic, examples of chemical vapor deposited (CVD) graphene-based anticorrosive coatings able to provide long-term protection (i.e., several months) of metals are still unavailable. Here, we finally present a polymer-graphene hybrid coating, comprising two single layers of CVD graphene sandwiched by three layers of polyvinyl butyral, that provides complete corrosion protection to commercial aluminum alloys even after 120 days of exposure to simulated seawater. The essential role played by graphene in the hybrid coating is evident when we compare the results from a polymer-only coating of the same thickness, which fails in protecting the metal after barely 30 days. With the emergence of commercially available large-area CVD graphene, our work demonstrates a straightforward approach towards highperformance anticorrosive coatings, which can be extended to other two-dimensional materials and polymers, for long-term protection of various relevant metals and alloys.

Synergic enhancement of the anticorrosion properties of an epoxy coating by compositing with both graphene and halloysite nanotubes

“…Among them, the placement of anticorrosive coatings on metallic surfaces seems to be a well‐established strategy for separating metals from external aggressive environments . For this purpose, ceramic coatings, metallic oxide coatings, graphene coatings, organic coatings and organic–inorganic hybrid coatings have been developed. Because organic coatings have many advantages, including a high efficiency and easy operation, they have emerged as a promising anticorrosive protection material for metallic surfaces .…”

Graphene as a nanofiller for enhancing the tribological properties and thermal conductivity of base grease

“…14 As an additive, graphene can validly improve the anti-wear and reduce the friction lubrication performance of grease, owing to its favourable mechanical properties and extremely smooth atomic surface. As a result of graphene's extremely small particle size and large surface area, the oxidation resistance of grease with graphene is greatly enhanced 15 . The use of graphene as an additive in base grease to enhance the tribology had been widely reported.…”

Quality assessment of terahertz time-domain spectroscopy transmission and reflection modes for graphene conductivity mapping

“…In the past decade many types of applications (e.g. gas sensors [1][2][3], transistors [4][5][6], OLEDs [7][8][9], corrosion protection [10][11][12], and photodetectors [13][14][15]), have been used to demonstrate the commercial potential of graphene. Now that high quality, large-scale CVD growth [16][17][18] and transfer [19][20][21] methods are becoming well established, the viability of graphene as a device component has become more realistic.…”