Application of uitrafast laser nanostructuring to selective laser melting parts

Chung-Wei Cheng*, Chih Wei Chien, De Yau Lin, Ji Bin Horng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A method is proposed for the fabrication of 3D metal (Ti6AL4V) parts that have microstructures covered with controllable nanostrucrures using selective laser melting (SLM) followed by laser-induced periodic surface structures (LIPSS). The metallic parts with microstructures was first fabricated by the SLM process, then a uitrafast laser machining platform was used to locally nanostructuring of the metal parts by LIPSS process. The experimental results show that periodic-like nanostrucrures with two different periods, i.e. 800-900 nm on the top surface and 450-600 nm on the bottom surface of the SLM-produced microstructures, were obtained simultaneously by a picosecond laser at wavelength 1064 nm with the same laser irradiation parameters. The liquid test demonstrates that the SLM+LIPSS process provides a structuring method to generate hydrophobic-enhanced metal parts. The process can provide a variety of 3D hierarchical micro/nanostructuring on metal material for biomedical application (e.g. customized implants) which is more than a conventional SLM process can provide.

Original languageEnglish
Pages (from-to)543-549
Number of pages7
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Volume36
Issue number6
StatePublished - 1 Dec 2015

Keywords

  • Additive manufacturing
  • LIPSS
  • Picosecond laser
  • Selective laser melting

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