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Corrosion Behavior of Zinc–Nickel and Graphene Layered Structures on Steel Substrates
Author(s) -
Polizos Georgios,
Stehle Yijing Y.,
Sharma Jaswinder,
Voylov Dmitry,
Vlassiouk Ivan,
Shin Seungha,
Meyer Harry M.
Publication year - 2019
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201800949
Subject(s) - materials science , graphene , nickel , raman spectroscopy , x ray photoelectron spectroscopy , chemical vapor deposition , corrosion , oxide , layer (electronics) , zinc , chemical engineering , composite material , metallurgy , nanotechnology , physics , engineering , optics
Large‐area single layers of graphene are synthesized using chemical vapor deposition techniques and are assembled onto steel substrates that are finished with a thin layer of electrodeposited zinc–nickel (ZnNi). Atomic force microscopy combined with Raman spectroscopy is used to determine the number of the assembled graphene layers and to characterize the defects in their crystal structure. The graphene‐ZnNi‐steel layered specimens are exposed to a salt‐fog environment. The defects in the structure of the graphene single layers are found to accelerate corrosion and the formation of a resistive oxide layer. The chemical composition and element map of the reacted surfaces are studied by x‐ray photoelectron spectroscopy. The electrical properties of the samples before and after the salt‐fog testing are evaluated using sheet resistance measurements.