文献类型：期刊文献

英文题名：Effect of graphene on corrosion resistance of waterborne inorganic zinc-rich coatings

作者：Cheng, Lihong[1,2];Liu, Chunli[2];Han, Dajie[2,3];Ma, Shuhua[2];Guo, Weihong[1];Cai, Haifeng[1];Wang, Xiaohui[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Preparat & Applicat Ultrafine Mat, Minist Educ,Polymer Proc Lab, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing, Peoples R China;[3]Beijing Univ Chem Technol, Sch Chem Engn, Beijing, Peoples R China

年份：2019

卷号：774

起止页码：255

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20184005908621);WOS:【SCI-EXPANDED(收录号:WOS:000449743600029)】；

语种：英文

外文关键词：Coating; Potassium silicate; Waterborne; Graphene; Zinc rich

摘要：The effect of graphene nanosheets on corrosion resistance of waterborne inorganic zinc-rich coatings was investigated in the paper. Coatings were applied on the carbon steel panels with different composition of zinc and graphene. The anticorrosion properties of the waterborne inorganic zinc-rich coatings were investigated by DC polarization technique and electrochemical impedance spectroscopy (EIS). The results showed that the addition of graphene improved the effective zinc content and the cathodic protection of the coating due to the electrical conductivity of the graphene. The coating with 2 wt% graphene maintained cathodic protection for 40 days. XPS results showed that Zn-5(OH)(8)Cl-2 was the main corrosion products on the surface of the coating and graphene greatly improved the corrosion rate of the zinc particles. (C) 2018 Elsevier B.V. All rights reserved.