Controllable Coating Graphene Oxide and Silanes on Cu Particles as Dual Protection for Anticorrosion
Artikel i vetenskaplig tidskrift, 2023

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.

coating

graphene

copper

graphene-reinforced metal matrix composite

anticorrosion

Författare

Jinhua Sun

2D-Tech

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Kristoffer Harr Martinsen

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Uta Klement

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Alessandro Kovtun

Consiglio Nazionale delle Ricerche (CNR)

Zhenyuan Xia

Chalmers, Industri- och materialvetenskap, Material och tillverkning

2D-Tech

Plinio Fernandes Borges Silva

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Eduard Hryha

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Lars Nyborg

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Vincenzo Palermo

2D-Tech

Chalmers, Industri- och materialvetenskap, Material och tillverkning

ACS Applied Materials & Interfaces

1944-8244 (ISSN) 1944-8252 (eISSN)

Vol. 15 32 38857-38866

Multifunctional 2D nanomaterials boost the development of next-generation batteries

ÅForsk (21-393), 2021-07-01 -- 2022-10-31.

2D material-baserad teknologi för industriella applikationer (2D-TECH)

VINNOVA (2024-03852), 2023-11-01 -- 2029-12-31.

VINNOVA (2019-00068), 2020-05-01 -- 2024-12-31.

GKN Aerospace Sweden (2D-tech), 2021-01-01 -- 2024-12-31.

Drivkrafter

Hållbar utveckling

Ämneskategorier (SSIF 2011)

Materialteknik

Styrkeområden

Produktion

Materialvetenskap

Infrastruktur

Chalmers materialanalyslaboratorium

DOI

10.1021/acsami.3c08042

PubMed

37550051

Mer information

Senast uppdaterat

2025-03-17