Effect of Rare-earth Salts on Corrosion Resistance of Phytic Acid Based Conversion Coatings on Q235 Steel

doi:10.20964/2020.08.84

	Effect of Rare-earth Salts on Corrosion Resistance of Phytic Acid Based Conversion Coatings on Q235 Steel
	Lu, Yong 1,2; Feng, Huixia 1
刊名	INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
	2020-08-01
卷号	15 期号:8 页码:7968-7981
关键词	conversion coating phytic acid rare-earth salts corrosion
ISSN号	1452-3981
DOI	10.20964/2020.08.84
英文摘要	Synergistic effect of rare earth salts conversion coating with phytic acid conversion coating was studied. Rare-earth salts were used as post-treatment to modify the phytic acid coated steel. The corrosion resistance properties of different coatings was investigated with electrochemical impedance spectroscopy in 3.5 wt.% NaCl solution. The corrosion resistance of phytic acid coated steel on steel was further enhanced with cerium nitrate post-treatment. The corrosion rate of phytic acid coated steel was seriously impaired by cerium nitrate post-treatment. But scanning electron microscopy (SEM) images indicated that there are also some micro-cracks on the coating surface when phytic acid coated steel was post-treated with cerium nitrate conversion bath. X-ray photoelectron spectroscopy (XPS) results demonstrated that the phytic acid could bind to the steel surface through the formation of -P-O-Fe and the cerium salts on the steel surface existed in the forms of both Ce3+ and Ce4+.
WOS研究方向	Electrochemistry
语种	英语
出版者	ESG
WOS记录号	WOS:000560655800067
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155133]
专题	教务处（创新创业学院）
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou, Gansu, Peoples R China; 2.Lanzhou Petrochem Corp Petrochina, Res Inst, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Lu, Yong,Feng, Huixia. Effect of Rare-earth Salts on Corrosion Resistance of Phytic Acid Based Conversion Coatings on Q235 Steel[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2020,15(8):7968-7981.
APA	Lu, Yong,&Feng, Huixia.(2020).Effect of Rare-earth Salts on Corrosion Resistance of Phytic Acid Based Conversion Coatings on Q235 Steel.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,15(8),7968-7981.
MLA	Lu, Yong,et al."Effect of Rare-earth Salts on Corrosion Resistance of Phytic Acid Based Conversion Coatings on Q235 Steel".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 15.8(2020):7968-7981.