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

Cowpe, J.S., Moorehead, R.D., Moser, D., Astin, J.S., Karthikeyan, S., Crofts, G., Kilcoyne, Susan H. and Pilkington, R.D. (2011) Hardness determination of bio-ceramics using laser-induced breakdown spectroscopy. Spectrochimica Acta part B, 66 (3-4). pp. 290-294. ISSN 0584-8547

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Laser-Induced Breakdown Spectroscopy (LIBS) was applied to the analysis of bioceramic
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 lineto-
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
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sue Kilcoyne
Date Deposited: 06 Dec 2011 12:17
Last Modified: 08 Nov 2015 06:07


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