Wetting characteristics of Zn on Fe surfaces and its influencing factors: Molecular dynamics simulation

The effect of crystallographic orientation of α-Al2O3 on the wetting behavior and adhesion characteristics of aluminum droplets

“…In this study, the motion between atoms is based on Newton's equations of motion, and the position and velocity of atoms on the solid surface will change over time, which affects the stabilization of the contact angle. In addition, Zhang et al [17] found that the arrangement of terminal atoms on different substrate surfaces results in the presence of microscale roughness on the substrate surface, which also leads to the retraction phenomenon of contact angle.…”

“…Chen et al [16] simulated the wetting behavior of Li droplets on Cu surfaces and found that Li droplets only spontaneously diffused on the Cu (100), and (111) surfaces, while Li droplets infiltrated the substrate and underwent atomic exchange on the (110) surface. Zhang et al [17] discovered that the Fe atom arrangement influences the dispersion of Zn droplets on the Fe (100), (110), and (111) surfaces, with Zn droplets having the greatest wettability on the Fe (111) surface due to the variation in the microscopic roughness of the surface atoms. The wetting behavior of liquid Li on the surface of Fe substrate was investigated by Zou et al [18] On surfaces made of Fe (100), (110), (112), and polycrystal Fe, Li droplets displayed flawless wetting characteristics.…”

1000 °C High-Temperature Wetting Behaviors of Molten Metals on Laser-Microstructured Metal Surfaces

“…Recently, molten metals have also been proposed to be potential novel materials in various fields, such as newly developed batteries and nuclear fusion. − The wetting of molten metals on various substrate surfaces has a great impact on related processes and applications, significantly affecting the processing feasibility and product performance. However, only few literature studies focused on the wettability of molten metals at high temperatures (e.g., 1000 °C) compared with the wettability studies on more common liquids under more gentle conditions, such as water and low-melting-point liquid metals at room temperature. − Various simulations have been performed to predict the probable wetting behaviors of molten metals on various substrates, − but practical observations remain scarce due to the availability of materials and the strict environmental requirements. Among the restricted experimental work, researchers prefer to improve the wettability of molten metals with several kinds of solid surfaces for better performance in welding, brazing, metal-based composite formation, and lithium battery preparation. − ,− For example, Wu et al proposed a method to enhance the wettability of a kind of room-temperature gallium-based liquid metal on polyacrylate surfaces for a better connection, Fan et al modified the wetting and spreading behaviors of Sn on the SiC surface by changing the content of the alloying element Cr, Li et al enhanced the wettability of molten high manganese steel with Ni–Co-coated ZTA ceramic particles to strengthen the abrasive wear resistance of the composites, and Sui et al studied the wetting ability of molten Ce and Cu–Ce alloy on various carbon materials.…”

“…On the other hand, limited publications studied the effect of surface microstructures on the wetting behaviors of molten metals on substrates at high temperatures, while most of them concerned about the composition of the melts and the substrate surfaces or the periphery conditions. − ,,− , Lai et al found that a microporous copper substrate enhanced the wetting of molten Sn, while Zhou et al structured the steel mold surfaces to weaken the adhesion of the molten and resolidified Al alloys with the mold by preventing their full wetting. Liu et al discussed the effect of laser-textured stainless steel surface structures on the wetting and spreading behaviors of the Al–Si alloy in the presence of flux, and Lin et al observed that rough silica surfaces improved the spreading of the Sn–Ag–Ti alloy.…”