Corrosion protection of the potassium silicate conversion coating

被引：12
作者：
Cheng, Lihong [1 ]
Lou, Feipeng [1 ]
Guo, Weihong [1 ]
机构：
[1] East China Univ Sci & Technol, Sch Mat Sci & Engn, Polymer Proc Lab, Key Lab Preparat & Applicat Ultrafine Mat,Minist, Shanghai 200237, Peoples R China
来源：
VACUUM | 2020年 / 176卷 / 176期
关键词：
Potassium silicate; Coating; NMR; EIS; Corrosion; NANO-SILICA; RESISTANCE; BEHAVIOR; STEEL; PERFORMANCE;
D O I：
10.1016/j.vacuum.2020.109325
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochemical impedance spectroscopy (EIS) and Nuclear magnetic resonance (NMR) were used to investigate the corrosion mechanism of the potassium silicate conversion coating. NMR showed that the coating mainly consists of Q(2), Q(3) and Q(4) structure and then changes to SiO2 after corrosion test. The Q(2) structure in the coating is beneficial for the anticorrosion property of the coating. The impedance of the coating measured at 0.01 Hz reaches 2.8 x 10(6) ohm.cm(2) with a high curing temperature, meaning that the anti-corrosion property of the silicate conversion coating can be improved by a high curing temperature according to EIS analysis.
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页数：8
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共 31 条
  • [1] Evaluation of synergistic effect of nanozinc/nanoclay additives on the corrosion performance of zinc-rich polyurethane nanocomposite coatings using electrochemical properties and salt spray testing
    Arianpouya, N.
    Shishesaz, M.
    Arianpouya, M.
    Nematollahi, M.
    [J]. SURFACE & COATINGS TECHNOLOGY, 2013, 216 : 199 - 206
  • [2] Effect of Silica Ratio on the Corrosion Behavior of Nano-silica Potassium Silicate Coatings on Aluminum Alloy 2024
    Bahri, H.
    Danaee, I.
    Rashed, G. R.
    Zaarei, D.
    [J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2015, 24 (02) : 839 - 847
  • [3] Corrosion and mechanical performance of double-layered nano-Al/PCL coating on Mg-Ca-Bi alloy
    Bakhsheshi-Rad, H. R.
    Hamzah, E.
    Abdul-Kadir, M. R.
    Daroonparvar, M.
    Medraj, M.
    [J]. VACUUM, 2015, 119 : 95 - 98
  • [4] Corrosion protection of steel by epoxy nanocomposite coatings containing various combinations of clay and nanoparticulate zirconia
    Behzadnasab, M.
    Mirabedini, S. M.
    Esfandeh, M.
    [J]. CORROSION SCIENCE, 2013, 75 : 134 - 141
  • [5] EIS studies of a corrosion inhibitor behavior under multiphase flow conditions
    Chen, Y
    Hong, T
    Gopal, M
    Jepson, WP
    [J]. CORROSION SCIENCE, 2000, 42 (06) : 979 - 990
  • [6] Corrosion resistance of inorganic zinc-rich coating reinforced by Ni-coated coal fly ash
    Cheng, Lihong
    Luo, Yang
    Ma, Shuhua
    Guo, Weihong
    Wang, Xiaohui
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 786 : 791 - 797
  • [7] Effect of graphene on corrosion resistance of waterborne inorganic zinc-rich coatings
    Cheng, Lihong
    Liu, Chunli
    Han, Dajie
    Ma, Shuhua
    Guo, Weihong
    Cai, Haifeng
    Wang, Xiaohui
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 774 : 255 - 264
  • [8] Silica-based coating for corrosion protection of electrogalvanized steel
    Dalbin, S
    Maurin, G
    Nogueira, RP
    Persello, J
    Pommier, N
    [J]. SURFACE & COATINGS TECHNOLOGY, 2005, 194 (2-3) : 363 - 371
  • [9] Eco-Friendly, Acrylic Resin-Modified Potassium Silicate as Water-Based Vehicle for Anticorrosive Zinc-Rich Primers
    Goodarzi, Iman Mirzaie
    Farzam, Mansour
    Shishesaz, Mohammad Reza
    Zaarei, Davood
    [J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2014, 131 (12)
  • [10] Corrosion protection by organic coatings: electrochemical mechanism and novel methods of investigation
    Grundmeier, G
    Schmidt, W
    Stratmann, M
    [J]. ELECTROCHIMICA ACTA, 2000, 45 (15-16) : 2515 - 2533
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