Preparation of La-Cr Perovskite Coating Using Electrodeposition Method
Zhang, Xue; You, Pengfei; Luo, Mengqi; Zeng, Chaoliu
Corresponding AuthorZeng, Chaoliu(
AbstractAn adhesive LaCrO3 perovskite coating has been prepared on stainless steel substrate by cathodic electrodeposition from aqueous solution 0.03 M La(CH3COO)(3) + 0.03 M CrCl3 + 0.03 M Na3C6H5O7, followed by heat-treatment at 800 degrees C in air. The electrodeposition of La-Cr coatings has been examined in the solution with pH of 2 similar to 3 at the current density of 1 similar to 5 mA cm(-2). It is shown that the change of pH by even 0.1 can affect obviously the deposition of La-Cr coatings, and increasing the current density will lead to the generation of more cracks in the coatings. A more uniform and compact La-Cr coating can be obtained in the solution with the optimized pH value of 2.7 at the optimized current density of 1 mA cm(-2). The La and Cr deposits change from their metallic states to the hydroxides during electrodeposition, corresponding to the increase in the pH with time. The as-prepared La-Cr coating is rich in La, due to the strong coordination of trivalent chromium with complex agent in the bath. The outward diffusion of Cr from the stainless steel substrate supplies the as-prepared La-rich coating to form LaCrO3 during heat-treatment. (C) The Author(s) 2016. Published by ECS. All rights reserved.
Funding OrganizationNational Natural Science Foundation of China
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[50771101]
WOS Research AreaElectrochemistry ; Materials Science
WOS SubjectElectrochemistry ; Materials Science, Coatings & Films
WOS IDWOS:000393852200085
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZeng, Chaoliu
AffiliationChinese Acad Sci, Inst Met Res, Lab Corros & Protect, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xue,You, Pengfei,Luo, Mengqi,et al. Preparation of La-Cr Perovskite Coating Using Electrodeposition Method[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2016,163(14):D821-D828.
APA Zhang, Xue,You, Pengfei,Luo, Mengqi,&Zeng, Chaoliu.(2016).Preparation of La-Cr Perovskite Coating Using Electrodeposition Method.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,163(14),D821-D828.
MLA Zhang, Xue,et al."Preparation of La-Cr Perovskite Coating Using Electrodeposition Method".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 163.14(2016):D821-D828.
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