Effect of Alginate Additives on the Microstructure and Properties of Phytic Acid-based Conversion Coating on a Steel Surface
Lu, Yong1,2; Feng, Huixia1
2019-12
Source PublicationINTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
ISSN1452-3981
Volume14Issue:12Pages:11429-11444
AbstractPhytic acid (PA) has a potential use as a coating on metal surface to retard corrosion. However, a loose structure and micro-cracks in the phytic acid coating layer damage the tightness of the coating, providing channels for the infiltration of corrosive media and seriously weakening the protective effect of the coating. Sodium alginate (SA) was added as an accelerating agent to improve the anti-corrosion protective effect and coating densification of the phytic acid coating on a Q235 steel surface. The micro-morphology, elemental composition and elemental chemical state of different samples were observed by the surface analysis technologies of scanning electron microscopy (SEM) equipped with X-ray energy dispersive spectrum (EDS) and X-ray photoelectron spectroscopy (XPS), all of which show a dense and homogenous phytic acid film with lower crack was precipitated on the sample treated by PA-SA conversion coating. Atomic force microscopy (AFM) and contact angle measurements were used to evaluate the adhesion properties of the prepared coating and the results showed that the PA-SA coated steel exhibited better wettability and adhesion to the top layers compared to the bare steel and phytic acid coating. The electrochemical measurements show that the corrosion resistance of the conversion coating was markedly improved on the steel substrate treated by phytic acid conversion bath containing SA.
Keywordsodium alginate conversion coating phytic acid adhesion corrosion
DOI10.20964/2019.12.04
Indexed BySCI
Language英语
Funding ProjectChina's Ministry of Science and Technology"Project for science and technology personnel service enterprise"[2009GJG10041]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000502341900060
PublisherESG
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64160
Collection教务处(创新创业学院)
Corresponding AuthorLu, Yong
Affiliation1.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou, Gansu, Peoples R China
2.Lanzhou Petrochem Corp Petrochina, Res Inst, Lanzhou, Gansu, Peoples R China
First Author AffilicationLanzhou University of Technology
Corresponding Author AffilicationLanzhou University of Technology
First Signature AffilicationLanzhou University of Technology
Recommended Citation
GB/T 7714
Lu, Yong,Feng, Huixia. Effect of Alginate Additives on the Microstructure and Properties of Phytic Acid-based Conversion Coating on a Steel Surface[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2019,14(12):11429-11444.
APA Lu, Yong,&Feng, Huixia.(2019).Effect of Alginate Additives on the Microstructure and Properties of Phytic Acid-based Conversion Coating on a Steel Surface.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,14(12),11429-11444.
MLA Lu, Yong,et al."Effect of Alginate Additives on the Microstructure and Properties of Phytic Acid-based Conversion Coating on a Steel Surface".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 14.12(2019):11429-11444.
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