Experimental study on the wettability of microtextured surfaces generated by the ultrasonic-assisted face turning

Abstract

Surface texture technology is a useful method for controlling the wettability. In this paper, ultrasonic-assisted face turning is implemented to create a microscaled texture on the flat faces. The effect of process parameters on the wettability of untextured and textured patterns is investigated by the full factorial method. Experimental results showed that the ultrasonic-assisted face turning is an effective method to create microdimples (periodic ripples) on the flat faces. Considered factors are turning (cutting speed, feed) and ultrasonic (vibration direction and vibration amplitude) parameters, which control the configuration and dimensions of microstructures. Surfaces machined by ultrasonic-assisted face turning have more liquid–solid interfacial areas compared with those processed by conventional turning. By changing the process parameters, expansion of microdimples in the cutting direction changes, hence the ratio between the interfacial and projected area and adsorption between the surface and water increases. So, textured surfaces by the ultrasonic-assisted face turning have better wettability performance in comparison to the untextured surfaces.

Employment of ultrasonic assisted turning in the fabrication of microtextures to improve the surface adhesion of the titanium implant

“…Parameters and related values were chosen according to primary experiments and similar research. 21 In order to achieve the minimum undesirable vibrations and continuous chip, depth and feed parameters were selected as 0.25 mm and 0.07 mm/rev, respectively, which remain constant during experiments.…”

Characterization of Ultrasonic-Induced Wettability Alteration under Subsurface Conditions

“…Currently, ultrasonic changes in wettability have been reported in other fields. Ultrasonic treatment is said to be able to change the material roughness and the number of oxygen-containing functional groups, which are the two most important factors affecting wetting . In the textile industry, the scale has been peeling, and the roughness increases in fiber surface after ultrasonic treatment, which improves the wool fiber surface adsorption performance and wool fiber felt shrinkage performance .…”

“…Ultrasonic treatment is said to be able to change the material roughness and the number of oxygen-containing functional groups, which are the two most important factors affecting wetting. 35 In the textile industry, the scale has been peeling, and the roughness increases in fiber surface after ultrasonic treatment, which improves the wool fiber surface adsorption performance and wool fiber felt shrinkage performance. 36 Chu concluded, through experimental research, that the trapped air layer was removed and, after being dipped into water again, with ultrasonic treatment, the surfaces showed underwater superhydrophobicity, and the asprepared superhydrophobic surfaces could repel air bubbles in the water.…”