Scholarlink

<p>The silane inorganic coating and its hybrid with organic polycaprolactone (PCL) have been developed to improve the corrosion resistance of a magnesium alloy (AZ31B). This study investigates the effects of the aging time of the sol materials for the inorganic coating and its combination with PCL on the corrosion properties of AZ31B. The corrosion behavior was examined using potentiodynamic polarization and electrochemical impedance spectroscopy in a 3.5 wt% NaCl at room temperature. The organic monolayer was prepared by a sol-gel route using tetraethyl orthosilicate (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTMS) precursors. The prolonged aging time of the TEOS/MPTMS sol, from 1 to 7 days, increases the hydrophobicity, roughness, and corrosion resistance of the coating. The combination of TEOS/MPTMS with PCL decreases the hydrophobicity of the coating layer. Moreover, the hybrid double-layer coating of TEOS/MPTMS with PCL on the AZ31B alloy significantly enhances the corrosion resistance by 10 times compared to that of the monolayer TEOS/MPTMS coating.</p> Graphical Abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hybrid inorganic sol-gel silane/organic polycaprolactone coatings for enhanced corrosion protection on AZ31B magnesium alloy

  • 期刊论文

  • 发表日期：

    2025年5月28日

查看全文
  • Lutviasari Nuraini,
  • Joko Triwardono,
  • Rahma Nisa Hakim,
  • Rahadian Roberto,
  • Fadli Rohman,
  • Yudi Nugraha Thaha,
  • Albertus Deny Heri Setyawan,
  • Aprilia Erryani

摘要

The silane inorganic coating and its hybrid with organic polycaprolactone (PCL) have been developed to improve the corrosion resistance of a magnesium alloy (AZ31B). This study investigates the effects of the aging time of the sol materials for the inorganic coating and its combination with PCL on the corrosion properties of AZ31B. The corrosion behavior was examined using potentiodynamic polarization and electrochemical impedance spectroscopy in a 3.5 wt% NaCl at room temperature. The organic monolayer was prepared by a sol-gel route using tetraethyl orthosilicate (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTMS) precursors. The prolonged aging time of the TEOS/MPTMS sol, from 1 to 7 days, increases the hydrophobicity, roughness, and corrosion resistance of the coating. The combination of TEOS/MPTMS with PCL decreases the hydrophobicity of the coating layer. Moreover, the hybrid double-layer coating of TEOS/MPTMS with PCL on the AZ31B alloy significantly enhances the corrosion resistance by 10 times compared to that of the monolayer TEOS/MPTMS coating.

Graphical Abstract