Generation of microcones on reaction-bonded silicon carbide by nanosecond pulsed laser irradiation

Tushar Meshram, Jiwang Yan

Research output: Contribution to journalArticle

Abstract

Silicon carbide (SiC) is heavily used in the industry due to its resistance to chemical wear and excellent mechanical properties such as high hardness and high stiffness. However, these properties make it difficult to produce micro and nanostructures on the surface of SiC by conventional methods. In this study, high-density microcones that protrude ~ 10 μm above the initial surface have been fabricated by nanosecond pulsed Nd:YAG laser irradiation (λ = 532 nm) on reaction-bonded SiC. Geometrically aligned cones were also fabricated by modifying the laser scanning path, and effect of different parameters such as pulse frequency, laser fluence was studied. It was observed that the surface morphology of microcones was affected by the pulse width and beam overlap. X-ray spectroscopy and Raman spectroscopy showed that the microcones were mainly composed of silicon. Formation of these cone structures made the surface highly superhydrophilic with a contact angle of ~ 0°.

Original languageEnglish
Pages (from-to)1039-1048
Number of pages10
JournalInternational Journal of Advanced Manufacturing Technology
Volume108
Issue number4
DOIs
Publication statusPublished - 2020 May 1

Keywords

  • Laser irradiation
  • Microcone
  • Reaction-bonded silicon carbide
  • Superhydrophilic surface
  • Surface texturing

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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