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

Autor:	Basler, Carl, Brandenburg, Albrecht, Michalik, Katarzyna, Mory, David
Přispěvatelé:	Publica
Rok vydání:	2019
Předmět:	laser-induced breakdown spectroscopy LIBS coating thickness ultrashort laser pulses lcsh:TP1-1185 lcsh:Chemical technology laser-induced breakdown spectroscopy (LIBS) Article pulse duration comparison industrial application
Zdroj:	Sensors (Basel, Switzerland) Sensors, Vol 19, Iss 19, p 4133 (2019) Sensors Volume 19 Issue 19
ISSN:	1424-8220
Popis:	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&ndash 30 µ m.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::dd8f395a730209ebed7a93583a3c6ae6 https://pubmed.ncbi.nlm.nih.gov/31554256 Zobrazit plný text záznamu