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

Cowpe, JS, Moorehead, RD, Moser, D, Astin, JS, Karthikeyan, S, Kilcoyne, SH, Crofts, G and Pilkington, RD 2011, 'Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy' , Spectrochimica Acta Part B: Atomic Spectroscopy, 66 (3-4) , pp. 290-294.

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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.

Item Type: Article
Uncontrolled Keywords: Glass ceramic, hydroxyapatite, LIBS, laser ablation, plasma
Themes: Energy
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Journal or Publication Title: Spectrochimica Acta Part B: Atomic Spectroscopy
Publisher: Elsevier
Refereed: Yes
ISSN: 0584-8547
Depositing User: Dr Sreejith Karthikeyan
Date Deposited: 24 Aug 2011 09:23
Last Modified: 30 Jul 2014 09:23
URI: http://usir.eprints.org/id/eprint/17457

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