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Controllable Coating Graphene Oxide and Silanes on Cu Particles as Dual Protection for Anticorrosion

Sun, Jinhua, 1987 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Harr Martinsen, Kristoffer, 1990 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Klement, Uta, 1962 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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Kovtun, Alessandro (author)
Istituto per la Sintesi Organica e la Fotoreattività (ISOF-CNR),Institute for organic syntheses and photoreactivity (ISOF-CNR)
Xia, Zhenyuan, 1983 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Fernandes Borges Silva, Plinio, 1992 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Hryha, Eduard, 1980 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Nyborg, Lars, 1958 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Palermo, Vincenzo, 1972 (author)
Chalmers tekniska högskola,Chalmers University of Technology
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 (creator_code:org_t)
2023
2023
English.
In: ACS Applied Materials & Interfaces. - 1944-8252 .- 1944-8244. ; 15:32, s. 38857-38866
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • Although two-dimensional nanosheets like graphene could be ideal atomic coatings to prevent corrosion, it is still controversial whether they are actually effective due to the presence of parasitic effects such as galvanic corrosion. Here, we reported a reduced graphene oxide (RGO) coating strategy to protect sintered Cu metal powders from corrosion by addressing the common galvanic corrosion issue of graphene. A layer of silane molecules, namely, (3-aminopropyl)triethoxysilane (APTES), is deposited between the surface of Cu particles and the graphene oxide (GO), acting as a primer to enhance adhesion and as an insulating interlayer to prevent the direct contact of the Cu with conductive RGO, mitigating the galvanic corrosion. Due to this core−shell coating, the RGO uniformly distributes in the Cu matrix after sintering, avoiding aggregation of RGO, which takes place in conventional GO-Cu composites. The dual coating of GO and silane results in bulk samples with improved anticorrosion properties, as demonstrated by galvanostatic polarization tests using Tafel analysis. Our development not only provides an efficient synthesis method to controllably coat GO on the surface of Cu but also suggests an alternative strategy to avoid the galvanic corrosion effect of graphene to improve the anticorrosion performance of metal.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Keyword

coating
graphene-reinforced metal matrix composite
anticorrosion
copper
graphene

Publication and Content Type

art (subject category)
ref (subject category)

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