Scholarlink

<p>To improve the corrosion resistance of aluminum alloys, this study combined hydrophobic functionalization with in situ growth of zeolite to construct zeolite composite coatings that integrate both physical barrier effects and hydrophobic properties on the alloy surface. The in situ hydrophobic modification of the ZSM-5 zeolite layer with dodecyltrimethoxysilane (DTMS) was successful. Despite altering the crystal orientation, the modification significantly enhanced hydrophobicity, achieving a water contact angle (WCA) of 110.1 ± 2.4°. In contrast, 1,2-bis(triethoxysilyl)ethane (BTESE) pretreatment markedly enhanced the grafting efficiency of 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES), achieving a superhydrophobic surface with a WCA of 154.1 ± 1.1°. Electrochemical impedance spectroscopy (EIS) results demonstrated that, after 336 h of immersion in 3.5&#xa0;wt.% NaCl solution, the composite-modified coating maintained a low-frequency impedance modulus (<i>|Z|</i><sub>0.01Hz</sub>) on the order of 10<sup>7</sup>&#xa0;Ω&#xa0;cm<sup>2</sup>, with less than one order of magnitude attenuation, significantly outperforming singly modified coating. These findings highlight a promising strategy for the design of high-performance protective coatings for metals.</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

Synthesis of a hydrophobic zeolite composite coating on aluminum alloy for corrosion protection

  • 期刊论文

  • 发表日期：

    2026年4月6日

查看全文
  • Qiufeng Mo,
  • Ruijia Hu,
  • Wanyu Liu,
  • Weihao Li,
  • Zhonglin Liu,
  • Yanming Li,
  • Mengxue Xu,
  • Xingfu Zheng,
  • Zhimin Huang

摘要

To improve the corrosion resistance of aluminum alloys, this study combined hydrophobic functionalization with in situ growth of zeolite to construct zeolite composite coatings that integrate both physical barrier effects and hydrophobic properties on the alloy surface. The in situ hydrophobic modification of the ZSM-5 zeolite layer with dodecyltrimethoxysilane (DTMS) was successful. Despite altering the crystal orientation, the modification significantly enhanced hydrophobicity, achieving a water contact angle (WCA) of 110.1 ± 2.4°. In contrast, 1,2-bis(triethoxysilyl)ethane (BTESE) pretreatment markedly enhanced the grafting efficiency of 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES), achieving a superhydrophobic surface with a WCA of 154.1 ± 1.1°. Electrochemical impedance spectroscopy (EIS) results demonstrated that, after 336 h of immersion in 3.5 wt.% NaCl solution, the composite-modified coating maintained a low-frequency impedance modulus (|Z|0.01Hz) on the order of 107 Ω cm2, with less than one order of magnitude attenuation, significantly outperforming singly modified coating. These findings highlight a promising strategy for the design of high-performance protective coatings for metals.