Dynamic wetting behavior of molten Al on α-Al2O3 substrate during heating in high magnetic field

被引：5
作者：
Miao, Peng [1 ,3 ]
Liu, Tie [1 ]
Tang, Pengcheng [1 ,3 ]
Wang, Jun [2 ]
Yuan, Sun [3 ]
Mu, Wangzhong [1 ]
Wang, Qiang [1 ]
机构：
[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[3] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2024年 / 682卷
基金：
中国国家自然科学基金;
关键词：
High magnetic fields; Heating; Dynamic wetting; Molten Al; SURFACE-STRUCTURE; ALUMINA; AL2O3; WETTABILITY; SIMULATION; STABILITY; CRYSTALS; KINETICS; TENSION; DROPS;
D O I：
10.1016/j.colsurfa.2023.132938
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The study observed the dynamic wetting behavior of molten Al on C-plane alpha-Al2O3 and R-plane alpha-Al2O3 substrates during heating under both 0 T and 6 T high magnetic fields (HMFs). Contact angles, contact (spreading) diameters, and heights were quantified using photographic data. The underlying mechanisms of dynamic wetting behavior under HMFs were analyzed, and dynamic wetting behavior models were developed. Under the 6 T HMF, the dynamic wetting behavior of molten Al on both oriented alpha-Al2O3 substrates underwent significant intensification, leading to distinctive changes in the molten Al's morphology. Upon reaching stability, molten Al exhibited significantly reduced contact angles and heights, along with a notable increase in spreading diameter under the 6 T HMF compared to the 0 T HMF. The dynamic wetting behavior was determined by the relative relationship between driving forces (resulting from changes in the three interfacial energies) and resistance (due to friction and hindrance caused by the surface oxide film of the molten Al during outward spreading). Consequently, two distinct dynamic wetting models were formulated for 0 T and 6 T HMFs. These findings open up novel possibilities for using HMFs to manipulate the wetting behavior of molten metals.
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页数：7
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