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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
Source PublicationSURFACE & COATINGS TECHNOLOGY
Volume325Pages:248-256
SubtypeArticle
AbstractPhytic 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.
KeywordPhytic Acid Corrosion Resistance Conversion Coating X-ray Photoelectron Spectroscopic
DOI10.1016/j.surfcoat.2017.06.051
Indexed BySCI
Language英语
WOS IDWOS:000411296900030
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/143191
Collection海洋环境腐蚀与与生物污损重点实验室
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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