Study of the fluence dependent interplay between laser induced material removal mechanisms in metals

Vaporization, melt displacement and melt ejection

J. M. Fishburn, M. J. Withford*, D. W. Coutts, J. A. Piper

*Corresponding author for this work

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Three quantitative methods, namely profilometry, high speed imaging and recoil momentum measurements using a ballistic pendulum, are used to determine the interplay of vaporization, melt displacement and melt ejection on nanosecond laser induced material removal. At low to moderate fluences (<7 J cm-2) material removal occurs via vaporization and melt displacement in aluminium. At high fluences (>7 J cm-2), material removal occurs predominantly via the explosive ejection of liquid droplets from the melt pool.

Original languageEnglish
Pages (from-to)5182-5188
Number of pages7
JournalApplied Surface Science
Volume252
Issue number14
DOIs
Publication statusPublished - 15 May 2006

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