The International Journal of Advanced Manufacturing Technology, Journal Year: 2024, Volume and Issue: 133(1-2), P. 307 - 319

Published: May 14, 2024

Abstract This study investigates the impact of combined texturing by micromachining and chemical functionalization on wetting behavior water condensation stainless steel 304. The transition from Wenzel to Cassie-Baxter or impregnated regimes is investigated. Understanding this critical for advancing surface engineering, as it enables precise control over various applications. Herein, we report wire EDM (wEDM) machining 304 produce two distinct microstructure patterns with directional canals pyramidal structure, their performance in condensation. These significantly performance. wEDM employed create roughness, followed phosphoric acid treatment trichloro-1H,1H,2H,2H-perfluorooctyl silane. Contact angle measurements reveal a synergistic effect between groove direction silane coating, leading hydrophobic surfaces dropwise Specimens exhibit contact 150°, while specimens structures 151 o . Roll-off experiments showcased among featuring structures. notably lower roll-off angles compared both flat those patterns, dependence orientation canals. In humid environments, micromachined superior capability untreated SS304 surfaces. Chemically functionalized grooved present larger condensate droplet diameters than An enhancement sevenfold higher latent heat transfer coefficient reported. achieve corrosion protection an efficiency reaching 82.9%.

Language: Английский