Laser ablation of a B4C-polysiloxane composite

M. J J Schmidt, D. K Y Low, L. Li

    Research output: Contribution to journalArticlepeer-review


    Composite materials, specifically ceramic-polymer composites and metal-polymer composites have received increased interest in a number of engineering applications, from impact protection, microelectronics to tribology. The characteristics of Nd:YAG laser ablation of a B4C:polysiloxane mixture have been studied with the use of time-integrated spectroscopy, laser surface profiling and microscopic analysis. The removal process for a variety of pulse widths and pulse energies have been interpreted using Beer-Lambert analysis. The spectroscopy results show no discernible B4C contribution to the plasma emissions. The polymer on its own and the composite mixture produced mostly a thermal background emission spectrum. These results are supported by high speed imaging. The polymer material acts as a binder matrix in the system and is instantly dissociated by the laser irradiation. In general, the ablation of this composite material can be attributed mainly to a thermal process. © 2002 Elsevier Science B.V. All rights reserved.
    Original languageEnglish
    Pages (from-to)271-275
    Number of pages4
    JournalApplied Surface Science
    Issue number1-4
    Publication statusPublished - 28 Jan 2002


    • B4C
    • Laser ablation
    • Polysiloxane
    • Silicone elastomer
    • Spectroscopy


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