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Indexed by:期刊论文

Date of Publication:2019-04-01

Journal:MATERIALS LETTERS

Included Journals:SCIE、EI

Volume:240

Page Number:262-266

ISSN No.:0167-577X

Key Words:Graphene; Functionalization; Composite materials; Corrosion; LEIS

Abstract:Graphene functionalization helps to improve the barrier property of graphene-reinforced coatings, however, it may also increase the electrical conductivity of coatings and result in galvanic corrosion between coating and metal. To demonstrate that fine-tuned functionalization of graphene is vital for its applications in metal protection, reduced graphene oxide (rGO) with various functionalization degree was precisely prepared. Compared with pristine rGO, rGO with a low functionalization degree possesses an enhanced corrosion promotion activity (CPA), and rGO with a high functionalization degree exhibits an inhibited CPA. Critical functionalization degree for inhibiting the CPA of rGO/epoxy nanocomposite coatings was determined. (C) 2019 Elsevier B.V. All rights reserved.