The Preparation and Corrosion Performance of Self-Assembled Monolayers of Stearic Acid and MgO Layer on Pure Magnesium

DOI Web Site Web Site 参考文献35件
  • Qiao Liying
    College of Materials Science and Engineering, Chongqing University National Engineering Center for Magnesium Alloy, Chongqing University Helmholtz-Zentrum Geesthacht, Institute of Materials Research
  • Wang Yong
    College of Materials Science and Engineering, Chongqing University National Engineering Center for Magnesium Alloy, Chongqing University
  • Wang Weilang
    College of Materials Science and Engineering, Chongqing University
  • Mohedano Marta
    Helmholtz-Zentrum Geesthacht, Institute of Materials Research
  • Gong Caihua
    College of Materials Science and Engineering, Chongqing University
  • Gao Jiacheng
    College of Materials Science and Engineering, Chongqing University

この論文をさがす

抄録

Self-assembled monolayers (SAMs) of stearic acid (SA) film were developed on pure magnesium with heat-pretreatment in order to improve both the corrosion resistance and the bioactivity of pure magnesium. A new method using a high concentration of SA solution (10−1 mol/L) is proposed to reduce the process time of the conventional SAMs methods. The effect of ultrasonic cleaning treatment on SAMs was investigated. Contact angle measurements were employed to evaluate the hydrophobic properties of the SAMs. The corrosion resistance and the bioactivity of the specimens were evaluated under biological conditions (simulated body fluid, 37°C) using potentiodynamic polarization method and long term immersion test. Surface morphology, composition and structure analysis of samples were characterized by the scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and attenuated total reflectance fourier transform infrared spectroscopy (ATR-FTIR) after immersion test. The results showed the corrosion resistance of pure Mg was improved by stearic acid-SAMs and the MgO layer made by heat-pretreatment, the SAMs made in high concentration (10−1 mol/L) of stearic acid solution just for 1.5 h showed better properties than conventional SAMs. Furthermore, ultrasonic cleaning treatment led to the formation of more dense and orderly SAMs and improved the anticorrosion property of SAMs prepared in high concentration of SA solution. Moreover, SAMs-Mg had better bioactivity than untreated magnesium.

収録刊行物

参考文献 (35)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ