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题名: One-pot synthesis of NiAl-CO3 LDH anti-corrosion coatings from CO2-saturated precursors
作者: Liu, Yi1, 2;  Yu, Tongwen1, 3;  Cai, Rui1;  Li, Yanshuo1;  Yang, Weishen1;  Caro, Juergen2
刊名: RSC ADVANCES
发表日期: 2015
DOI: 10.1039/c5ra01969a
卷: 5, 期:37, 页:29552-29557
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Anti-corrosive coatings based on layered double hydroxides (LDHs) have been considered as promising alternatives to conventional chromate-containing conversion coatings. Among various LDHs, carbonate-intercalated LDH coatings with a c-axis preferred orientation should be the optimum structure for protecting metals against corrosion. Herein we successfully prepared NiAl-CO3 LDH coatings on aluminium plates in one step. Particularly it was found that CO2 dissolved in the precursor solution exerted great influence on the microstructure and anti-corrosion capacity of prepared LDH coatings. Trace amounts of CO2 in the precursor solution led to the formation of ab-oriented 7 mm-thick LDH coatings, while preferentially c-oriented LDH coatings with an average thickness of 12 mm were formed from CO2-saturated precursor solutions. A DC polarization test demonstrated that preferentially c-oriented LDH coatings exhibited much higher anti-corrosion performance than ab-oriented LDH coatings possibly due to the decreased density of mesoscopic defects. Simultaneously, CO2, the green gas, was also positively utilized.
关键词[WOS]: LAYERED DOUBLE HYDROXIDE ;  CHROMATE CONVERSION COATINGS ;  IN-SITU CRYSTALLIZATION ;  CORROSION PROTECTION ;  MONOLAYER FILMS ;  ANION-EXCHANGE ;  MG ALLOY ;  ALUMINUM ;  GROWTH ;  ORIENTATION
语种: 英语
WOS记录号: WOS:000352091600093
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146142
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Leibniz Univ Hannover, Inst Phys Chem & Electrochem, D-30167 Hannover, Germany
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Yi,Yu, Tongwen,Cai, Rui,et al. One-pot synthesis of NiAl-CO3 LDH anti-corrosion coatings from CO2-saturated precursors[J]. RSC ADVANCES,2015,5(37):29552-29557.
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