期刊
SCIENTIFIC REPORTS
卷 11, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-81029-6
关键词
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资金
- International Cooperation in Science and Technology Innovation between Governments, National Key Research and Development Program of China [2018YFE0116200]
- National Natural Science Foundation of China [51971040]
- Fundamental Research Funds for the Central Universities [2020CDJQY-A007]
- China Postdoctoral Science Foundation [2017M620410, 2018T110942]
- Chongqing Postdoctoral Scientific Research Foundation [Xm2017010]
The study showed that impregnating corrosion inhibitors into PEO coatings via vacuuming process, followed by fast sealing treatment and hydrothermal preparation of LDHs nanocontainers, resulted in significant changes in structure and thickness of the coatings, improving corrosion protection performance. EIS results indicated that AS/Ce-HT specimen exhibited the best corrosion protection.
Corrosion inhibitors 2,5-pyridinedicarboxilate (PDC), sodium metavanadate (SMV) and 5-aminosalicylate (AS) were impregnated into porous PEO coatings respectively via vacuuming process, followed by fast sealing treatment in a Ce containing solution. After that layered double hydroxides (LDHs) based nanocontainers were respectively prepared on them via hydrothermal treatment. In frame of this work it was shown, that sealing effect for the pore was provided by formation of new phase CeO2 on the surface of PEO coatings. And, hydrothermal preparation for preparing LDHs leaded obvious changes in structure and thickness of the coatings. In addition, impregnation of inhibitors was in favor of improving LDHs content in final composite coatings. EIS result indicated that AS/Ce-HT specimen exhibited a best corrosion protection.
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