摘要
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 um.The fluoroalkylsilane（FAS）-modified HZC film exhibited a hydrophobic property with a water contact angle of 131.3°.The FAS/HZC film significantly improved the corrosion resistance of the AZ31 alloy due to hierarchical structures and hydrophobic modification.
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 um.The fluoroalkylsilane（FAS）-modified HZC film exhibited a hydrophobic property with a water contact angle of 131.3°.The FAS/HZC film significantly improved the corrosion resistance of the AZ31 alloy due to hierarchical structures and hydrophobic modification.
基金
supported by the National Natural Science Foundation of China(No.51241001)
SDUST Research Fund(No.2014TDJH104)
Taishan Scholarship Project of Shandong Province(No.TS20110828)
Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents(No.2013RCJJ006)
Scientific Research Foundation of Shandong for Outstanding Young Scientist(No.BS2013CL009)
Applied Basic Research Foundation of Qingdao(No.13-1-4-188-jch)
