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题名: Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels
作者: Gao, Xiang1; Li, Weihua1,2; Yan, Ru3; Tian, Huiwen1; Ma, Houyi3
刊名: SURFACE & COATINGS TECHNOLOGY
出版日期: 2017-09-25
卷号: 325, 页码:248-256
关键词: Phytic acid ; Corrosion resistance ; Conversion coating ; X-ray photoelectron spectroscopic
DOI: 10.1016/j.surfcoat.2017.06.051
文章类型: Article
英文摘要: 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.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000411296900030
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.qdio.ac.cn/handle/337002/143191
Appears in Collections:海洋腐蚀与防护研究发展中心_期刊论文

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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

Recommended Citation:
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.
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文件名: Effect of zinc ion on the microstructure and electrochemical behavior of phytic acid based conversion coatings on Q235 steels.pdf
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