期刊
ACTA METALLURGICA SINICA-ENGLISH LETTERS
卷 28, 期 3, 页码 373-380出版社
CHINESE ACAD SCIENCES, INST METAL RESEARCH
DOI: 10.1007/s40195-015-0208-x
关键词
Magnesium alloy; Hydrophobicity; Silane; Surface modification; Corrosion
资金
- National Natural Science Foundation of China [51241001]
- SDUST Research Fund [2014TDJH104]
- Taishan Scholarship Project of Shandong Province [TS20110828]
- Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents [2013RCJJ006]
- Scientific Research Foundation of Shandong for Outstanding Young Scientist [BS2013CL009]
- Applied Basic Research Foundation of Qingdao [13-1-4-188-jch]
The corrosion resistance of magnesium alloys can be improved using functional surface modification such as hydrophobic treatment. In this study, a hierarchical hydroxide zinc carbonate (HZC) film was fabricated on AZ31 magnesium alloy via a simple chemical-bath deposition process using urea aqueous solution. The morphologies, compositions and corrosion resistance of the hydrophobic film were analyzed using scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectrometer, and electrochemical measurements as well. The results revealed that the HZC film displayed flower-like protrusions and had a thickness of approximately 100 pm. The fluoroalkylsilane (FAS)-modified HZC film exhibited a hydrophobic property with a water contact angle of 131.3 degrees. The FAS/HZC film significantly improved the corrosion resistance of the AZ31 alloy due to hierarchical structures and hydrophobic modification.
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