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Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy

In this study, a method is presented to measure precisely the thickness of coated components based on laser-induced breakdown spectroscopy (LIBS). The thickness is determined by repetitively ablating the coating with ultrashort laser pulses, monitoring the spectrum of the generated plasma and calcul...

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Detalles Bibliográficos
Autores principales: Basler, Carl, Brandenburg, Albrecht, Michalik, Katarzyna, Mory, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806186/
https://www.ncbi.nlm.nih.gov/pubmed/31554256
http://dx.doi.org/10.3390/s19194133
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author Basler, Carl
Brandenburg, Albrecht
Michalik, Katarzyna
Mory, David
author_facet Basler, Carl
Brandenburg, Albrecht
Michalik, Katarzyna
Mory, David
author_sort Basler, Carl
collection PubMed
description In this study, a method is presented to measure precisely the thickness of coated components based on laser-induced breakdown spectroscopy (LIBS). The thickness is determined by repetitively ablating the coating with ultrashort laser pulses, monitoring the spectrum of the generated plasma and calculating the coating thickness from the specific plasma signal in comparison to a reference measurement. We compare different pulse durations of the laser (290 fs, 10 ps, 6 ns) to extend the material analysis capabilities of LIBS to a real thickness measurement tool. The method is designed for production processes with known coating materials. Here, we show this for a nickel coating and a tungsten carbide coating on a copper sample with thicknesses from 5–30 µm.
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spelling pubmed-68061862019-11-07 Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy Basler, Carl Brandenburg, Albrecht Michalik, Katarzyna Mory, David Sensors (Basel) Article In this study, a method is presented to measure precisely the thickness of coated components based on laser-induced breakdown spectroscopy (LIBS). The thickness is determined by repetitively ablating the coating with ultrashort laser pulses, monitoring the spectrum of the generated plasma and calculating the coating thickness from the specific plasma signal in comparison to a reference measurement. We compare different pulse durations of the laser (290 fs, 10 ps, 6 ns) to extend the material analysis capabilities of LIBS to a real thickness measurement tool. The method is designed for production processes with known coating materials. Here, we show this for a nickel coating and a tungsten carbide coating on a copper sample with thicknesses from 5–30 µm. MDPI 2019-09-24 /pmc/articles/PMC6806186/ /pubmed/31554256 http://dx.doi.org/10.3390/s19194133 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Basler, Carl
Brandenburg, Albrecht
Michalik, Katarzyna
Mory, David
Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title_full Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title_fullStr Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title_full_unstemmed Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title_short Comparison of Laser Pulse Duration for the Spatially Resolved Measurement of Coating Thickness with Laser-Induced Breakdown Spectroscopy
title_sort comparison of laser pulse duration for the spatially resolved measurement of coating thickness with laser-induced breakdown spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6806186/
https://www.ncbi.nlm.nih.gov/pubmed/31554256
http://dx.doi.org/10.3390/s19194133
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