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Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K2ZrF6
Liu, Feng; Shan, Dayong; Song, Yingwei; Han, En-Hou
Corresponding AuthorShan, Dayong(dyshan@imr.ac.cn)
2011-10-25
Source PublicationSURFACE & COATINGS TECHNOLOGY
ISSN0257-8972
Volume206Issue:2-3Pages:455-463
AbstractA plasma electrolytic oxidation (PEO) coating on AM50 magnesium alloy was obtained in a K2ZrF6-NH4H2PO4-KF-C6H5O7Na3 electrolyte solution. The influence of the electrolytes on the properties of the PEO coating had been investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), roughness determination and electrochemical measurements. The experimental results show that 10 g L-1 K2ZrF6 and the presence of 8 g L-1 NH4H2O4 are beneficial for the passivation effect of the solution on AM50 Mg alloy as well as the compactness of the PEO coating. Many pores with large dimension on the surface of the coating are filled with coating compounds (mainly MgF2), and the characteristics of these pores are influenced by the concentration of KF. The addition of KF and C6H5O7Na3 enhances the growth rate of the coating. The coating shows high corrosion resistance in the presence of 10 g L-1 K2ZrF6 combined with 8 g L-1 NH4H2PO4, 3 g L-1 KF and 5 g L-1 C6H5O7Na3. (C) 2011 Elsevier B.V. All rights reserved.
KeywordPEO coating Magnesium Anodizing Corrosion resistance Electrolytes
Funding OrganizationNational Project of Scientific and Technical Supporting Programs ; Chinese MOST ; National Natural Science Foundation of China ; National Key Technology RD Program
DOI10.1016/j.surfcoat.2011.07.054
Indexed BySCI
Language英语
Funding ProjectNational Project of Scientific and Technical Supporting Programs ; Chinese MOST[2007CB613705] ; National Natural Science Foundation of China[50901082] ; National Key Technology RD Program[2011BAE22B05]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Coatings & Films ; Physics, Applied
WOS IDWOS:000295386900037
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:40[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/103886
Collection中国科学院金属研究所
Corresponding AuthorShan, Dayong
AffiliationChinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Liu, Feng,Shan, Dayong,Song, Yingwei,et al. Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K2ZrF6[J]. SURFACE & COATINGS TECHNOLOGY,2011,206(2-3):455-463.
APA Liu, Feng,Shan, Dayong,Song, Yingwei,&Han, En-Hou.(2011).Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K2ZrF6.SURFACE & COATINGS TECHNOLOGY,206(2-3),455-463.
MLA Liu, Feng,et al."Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K2ZrF6".SURFACE & COATINGS TECHNOLOGY 206.2-3(2011):455-463.
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