Scholarlink

<p>We introduce a process for modulating the wettability of Mod.9Cr-1Mo (ASME Gr.91) steel surfaces by forming microstructures. Surface modification was achieved through electrochemical etching, where experiments were conducted by varying applied voltage, reaction time, and electrolyte concentration. Without additional processes, such as hydrophobic coatings, the surface of the specimens was modified to hydrophobic through electrochemical etching. Post-process changes in surface morphology were analyzed using SEM images and surface roughness obtained via confocal laser scanning microscopy. The alterations in wettability on the modified surface were confirmed by measuring the static contact angle and observing the droplet behavior, illustrating how the droplet spreads and retracts upon colliding with the surface. The contact angle of the bare Gr.91 steel surface was 89.3°, while the modified surface reached a maximum of 143.8°. Based on these analyses, we confirmed that a simple yet effective electrochemical etching process can impart a durable hydrophobic characteristic to Gr.91 surfaces.</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

Surface Modification of Gr.91 Steel via Electrochemical Etching and Its Effect on Surface Properties

  • 期刊论文

  • 发表日期：

    2025年1月18日

查看全文
  • Juheon Kim,
  • Jiyun Oh,
  • Sangmin Lee,
  • Hyungmo Kim

摘要

We introduce a process for modulating the wettability of Mod.9Cr-1Mo (ASME Gr.91) steel surfaces by forming microstructures. Surface modification was achieved through electrochemical etching, where experiments were conducted by varying applied voltage, reaction time, and electrolyte concentration. Without additional processes, such as hydrophobic coatings, the surface of the specimens was modified to hydrophobic through electrochemical etching. Post-process changes in surface morphology were analyzed using SEM images and surface roughness obtained via confocal laser scanning microscopy. The alterations in wettability on the modified surface were confirmed by measuring the static contact angle and observing the droplet behavior, illustrating how the droplet spreads and retracts upon colliding with the surface. The contact angle of the bare Gr.91 steel surface was 89.3°, while the modified surface reached a maximum of 143.8°. Based on these analyses, we confirmed that a simple yet effective electrochemical etching process can impart a durable hydrophobic characteristic to Gr.91 surfaces.