An eco-friendly superhydrophobic protective film(DTMS/TEOS silane film)was fabricated on sintered NdFeB substrate through the utilization of electrochemically assisted deposition technology.The structure,properties,an...An eco-friendly superhydrophobic protective film(DTMS/TEOS silane film)was fabricated on sintered NdFeB substrate through the utilization of electrochemically assisted deposition technology.The structure,properties,and film-forming mechanism of dodecyltrime-thoxysilane(DTMS)/tetraethoxysilane(TEOS)silane films were comprehensively analyzed using Fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),potentiodynamic polarization curves and electrochemical impedance spectroscopy(EIS).Based on the test results,it can be determined that this film has a superhydrophobic property with a hydrophobicity angle of 152°.This special property can be attributed to the long alkyl chains in the DTMS molecule,the rough morphology,and the low surface energy of the DTMS/TEOS silane film.The surface of sintered NdFeB is coated with a layered three-dimensional network silane film that forms through the condensation of silanol substances.This film provides excellent corrosion resistance to the sintered NdFeB substrate,reducing its corrosion current density to 2.02×10~(-6)A/cm~2.Moreover,the impact of film on the magnetic characteristics of sintered NdFeB was assessed and found to be minimal.展开更多
The silane composite film formed on electrogalvanized steel sheet by silane film with ZrO2 improve the corrosion resistance. The surface morphology, the structure and composition as well as the corrosion resistance of...The silane composite film formed on electrogalvanized steel sheet by silane film with ZrO2 improve the corrosion resistance. The surface morphology, the structure and composition as well as the corrosion resistance of the prepared silane composite fihn were investigated by SEM, AFM, XPS and electrochemical test. The experimental results showed that the structure of the silane composite film was composed of Si-O-Si three-dimensional network doped with ZrO2 showing excellent corrosion resistance, because the structure of this kind of composite film has much less micropore which improves the uniform and density of the silane film.展开更多
基金financial support from the Public Welfare Projects of Zhejiang Province,China(No.LGG22E010002)the National Natural Science Foundation of China(Nos.52001300,52171083)。
文摘An eco-friendly superhydrophobic protective film(DTMS/TEOS silane film)was fabricated on sintered NdFeB substrate through the utilization of electrochemically assisted deposition technology.The structure,properties,and film-forming mechanism of dodecyltrime-thoxysilane(DTMS)/tetraethoxysilane(TEOS)silane films were comprehensively analyzed using Fourier transform infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),potentiodynamic polarization curves and electrochemical impedance spectroscopy(EIS).Based on the test results,it can be determined that this film has a superhydrophobic property with a hydrophobicity angle of 152°.This special property can be attributed to the long alkyl chains in the DTMS molecule,the rough morphology,and the low surface energy of the DTMS/TEOS silane film.The surface of sintered NdFeB is coated with a layered three-dimensional network silane film that forms through the condensation of silanol substances.This film provides excellent corrosion resistance to the sintered NdFeB substrate,reducing its corrosion current density to 2.02×10~(-6)A/cm~2.Moreover,the impact of film on the magnetic characteristics of sintered NdFeB was assessed and found to be minimal.
基金supported by the National High Technical Research and Development Programme of China(No.2009AA03Z529)Doctor Research Subsidy of Shenyang University,China
文摘The silane composite film formed on electrogalvanized steel sheet by silane film with ZrO2 improve the corrosion resistance. The surface morphology, the structure and composition as well as the corrosion resistance of the prepared silane composite fihn were investigated by SEM, AFM, XPS and electrochemical test. The experimental results showed that the structure of the silane composite film was composed of Si-O-Si three-dimensional network doped with ZrO2 showing excellent corrosion resistance, because the structure of this kind of composite film has much less micropore which improves the uniform and density of the silane film.
