Modification of Ti6Al4V surface properties by combined DLW-DLIP hierarchical micro-nano structuring

Abstract

<jats:title>Abstract</jats:title><jats:p>The use of pulsed laser irradiation techniques has proven to be a clearly effective procedure for the achievement of surface properties modification via micro-/nano-structuration, different conceptual approaches having been the subject of research and extensively reported in the literature. Completing the broad spectrum of applications developed mostly involving the generation of structured surfaces (particularly of metallic materials) with specific contact, friction and wear functionalities, the application of laser sources to the surface structuration of metal surfaces for the modification of their wetability and corrosion resistance properties is considered. The particular problems found for the generation of the appropriate surface microstructure able to replicate the hydrophobic behaviour of some live structures present in nature, their long term stability and their amenability to macroscopic scale are discussed along with innovative methods to generate the required hierarchical micro-/nano-structures by a combination of the DLW and DLIP techniques.</jats:p>

Surface Structuring by Laser Remelting (WaveShape): Microstructuring of Ti6Al4V for a Small Laser Beam Diameter and High Scan Speeds

“…Alternatively, the creation of hierarchical, periodical structures are a feasible and promising way to combine surface features in the millimeter range with periodic patterns from the DLIP process [9]. Specifically, the combination of direct laser writing (DLW) and DLIP was already investigated to successfully create these kinds of hierarchical, periodical surface features on Ti6Al4V samples [10]. The fundamental mechanisms of DLIP are thought to be the redistribution of molten material.…”

Thermally Induced Gradient of Properties on a Superhydrophobic Magnesium Alloy Surface

“…Besides, it was also shown that a combination of laser chemical modification and laser texturing followed by chemisorption of low surface energy compounds allows getting the superhydrophobic coatings with exceptional mechanical and chemical properties on top of different substrates [17][18][19][20]. Thus, providing breakthrough results in Metals 2021, 11, 41 2 of 14 materials science [21][22][23][24][25][26][27][28], laser processing of materials has proven to be a quite simple and attractive method for surface modification.…”

A Process Optimization Strategy for Texturing 3D Surfaces Using Direct Laser Interference Patterning

“…[7][8][9] Such microstructures enable the realization of unique surface properties such as hydrophobic or antibacterial characteristics as well as optimized tribological properties. [10][11][12] A particular challenge in laser surface functionalization is the adaptability to 3D freeform components, which has become a significant importance for technical applications in recent years. [13] Typical approaches that are being implemented in industry or research laboratories for treated 3D parts are for instance, Computerized Numerical Control (CNC) systems as well as robot systems, which are in some cases limited in accuracy (in particular the robot systems).…”