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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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.
|Uncontrolled Keywords:||Glass ceramic, hydroxyapatite, LIBS, laser ablation, plasma|
|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|
|Depositing User:||Dr Sreejith Karthikeyan|
|Date Deposited:||24 Aug 2011 10:23|
|Last Modified:||20 Aug 2013 18:08|
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