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Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels
Gao, Xiang1; Li, Weihua1,2; Yan, Ru3; Tian, Huiwen1; Ma, Houyi3
2017-09-25
发表期刊SURFACE & COATINGS TECHNOLOGY
卷号325页码:248-256
文章类型Article
摘要Phytic acid conversion coating and Zn2+ doped phytic acid conversion coating were fabricated on Q235 steels by immersing the steel samples in corresponding coating bath for 600 s. The changes of coating formation process and adsorption action of phytic acid on steel surface due to addition of Zn2+ in coating bath were investigated. Scanning electron microscopy images exhibited that phytic acid conversion coating was porous network structure consisting of needle-like crystals, but Zn2+ doped phytic acid conversion coating was one uniform layer except some fine cracks. Energy dispersive spectroscopic, X-ray diffraction and X-ray photoelectron spectroscopic characterizations demonstrated that the roles of Zn2+ during the coating formation process could conclude to two sides: (i) Zn2+ could promote the adsorption reaction of phytic acid to form one thicker phytic acid conversion coating on steel surface; (ii) a part of Zn2+ could form ZnO and aggregation of the complex of phytic acid, Zn and Fe and doped to the formed conversion coatings. And the electrochemical measurements results showed that the corrosion protection efficiency of Zn2+ doped phytic acid conversion coating was higher than that of phytic acid conversion coating. (C) 2017 Elsevier B.V. All rights reserved.
关键词Phytic Acid Corrosion Resistance Conversion Coating X-ray Photoelectron Spectroscopic
DOI10.1016/j.surfcoat.2017.06.051
收录类别SCI
语种英语
WOS记录号WOS:000411296900030
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/143191
专题海洋腐蚀与防护研究发展中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
2.Qingdao Technol Univ, Cooperat Innovat Ctr Engn Construct & Safety Shan, Blue Econ Zone, Qingdao 266033, Peoples R China
3.Shandong Univ, Sch Chem & Chem Engn, State Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China
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Gao, Xiang,Li, Weihua,Yan, Ru,et al. Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels[J]. SURFACE & COATINGS TECHNOLOGY,2017,325:248-256.
APA Gao, Xiang,Li, Weihua,Yan, Ru,Tian, Huiwen,&Ma, Houyi.(2017).Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels.SURFACE & COATINGS TECHNOLOGY,325,248-256.
MLA Gao, Xiang,et al."Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels".SURFACE & COATINGS TECHNOLOGY 325(2017):248-256.
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