Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy

J. S. Cowpe, R. D. Moorehead, D. Moser, J. S. Astin, S. Karthikeyan, S. H. Kilcoyne, G. Crofts, R. D. Pilkington

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bio-ceramic samples. The relationship between sample hardness and LIBS plasma properties was investigated, with comparison to conventional Vickers hardness measurements. The plasma excitation temperature Te was determined using the line-to-continuum ratio for the Si (I) 288.16 nm emission line; we have demonstrated a linear relationship between sample surface hardness and plasma temperature. Results indicate that hardness determination based on measurements of Te offers greater reproducibility than Vickers hardness measurements, under the conditions considered here. The validity of spectroscopic diagnostics based on LTE was confirmed.

Original languageEnglish (US)
Pages (from-to)290-294
Number of pages5
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume66
Issue number3-4
DOIs
StatePublished - Mar 2011

Bibliographical note

Funding Information:
The authors gratefully acknowledge support for this work from the Medical Research Council grant no. G0802650 ID90193 .

Keywords

  • Glass ceramic
  • Hydroxyapatite
  • LIBS
  • Laser ablation
  • Plasma

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