920℃ high-temperature wetting behaviors of molten aluminum on laser-textured cast iron surface

IF 2.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Applied Physics A Pub Date : 2025-03-27 DOI:10.1007/s00339-025-08453-7

Xin Lyu, Zhiyuan Rui, Haobo Sun, Chao Mei, Wandong Cheng, Kang Lu, Yun Dong

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Abstract

This study investigates the anti-wetting behavior of liquid aluminum on microtextured QT700 cast iron surfaces for vacuum ladle applications. Periodic surface microstructures (micro-circular grooves, micro-pits, micro-grooves) are fabricated on QT700 substrates via nanosecond laser processing, with subsequent aluminum wetting dynamics analyzed at 900 °C using an advanced sessile drop apparatus equipped with high-speed imaging. Results demonstrate that all laser-generated microstructures inhibit aluminum wetting, exhibiting higher equilibrium contact angles compared to smooth surfaces. Micro-pit patterns show the most significant anti-wetting effect, achieving a maximum contact angle of 77°. Cross-sectional SEM-EDS analysis reveals vertical growth of intermetallic compounds at three-phase junctions, which mechanically pin the contact line through capillary force-induced reaction enhancement. Notably, the intermetallic layer thickness exceeds laser-ablated groove depth, resulting in similar final interface morphologies across textured and smooth surfaces. These findings provide mechanistic insights for designing non-wetting ladle linings through controlled interfacial reactions.

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铝液在激光织构铸铁表面920℃高温润湿行为

本研究研究了铝液在QT700微织构铸铁真空包表面的抗润湿行为。通过纳秒激光加工，在QT700衬底上制造出周期性表面微结构（微圆槽、微坑、微槽），随后使用配备高速成像的先进的无底滴装置在900°C下分析铝的润湿动力学。结果表明，与光滑表面相比，所有激光产生的微结构都能抑制铝的润湿，表现出更高的平衡接触角。微坑型的抗润湿效果最为显著，最大接触角为77°。横断面SEM-EDS分析显示，金属间化合物在三相连接处垂直生长，通过毛细管力诱导的反应增强，机械地钉住了接触线。值得注意的是，金属间层厚度超过激光烧蚀槽深度，导致织构表面和光滑表面的最终界面形态相似。这些发现为通过控制界面反应设计非润湿钢包衬里提供了机理见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

期刊介绍： Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.