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

Cowpe, JS; Moorehead, RD; Moser, D; Astin, JS; Karthikeyan, S; Kilcoyne, SH; Crofts, G; Pilkington, RD

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.

Citation

Cowpe, J., Moorehead, R., Moser, D., Astin, J., Karthikeyan, S., Kilcoyne, S., …Pilkington, R. (2011). Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy. Spectrochimica Acta Part B: Atomic Spectroscopy, 66(3-4), 290-294. https://doi.org/10.1016/j.sab.2011.03.007

• Journal Article Type: Article
• Publication Date: Mar 1, 2011
• Deposit Date: Aug 24, 2011
• Publicly Available Date: Aug 24, 2011
• Journal: Spectrochimica Acta Part B: Atomic Spectroscopy
• Print ISSN: 0584-8547
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 66
• Issue: 3-4
• Pages: 290-294
• DOI: https://doi.org/10.1016/j.sab.2011.03.007
• Keywords: Glass ceramic, hydroxyapatite, LIBS, laser ablation, plasma
• Publisher URL: http://dx.doi.org/10.1016/j.sab.2011.03.007