Multiple wavelength stratigraphy by laser-induced breakdown spectroscopy of Ni-Co alloy coatings on steel
| Autor: | Roxana Radvan, Ulrich Pacher, Wolfgang Kautek, Monica Dinu, Tristan O. Nagy |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Alloy 02 engineering and technology engineering.material 01 natural sciences Fluence Analytical Chemistry law.invention law Laser-induced breakdown spectroscopy Spectroscopy Instrumentation business.industry 010401 analytical chemistry Nanosecond 021001 nanoscience & nanotechnology Laser Atomic and Molecular Physics and Optics 0104 chemical sciences Wavelength Attenuation coefficient engineering Optoelectronics 0210 nano-technology business |
| Zdroj: | Spectrochimica Acta Part B: Atomic Spectroscopy. 146:36-40 |
| ISSN: | 0584-8547 |
| DOI: | 10.1016/j.sab.2018.04.006 |
| Popis: | The rapid qualitative and quantitative stratigraphic analysis of metal coatings is of substantial importance in modern industrial applications. Laser-Induced Breakdown Spectroscopy (LIBS) is presented as an attractive option to obtain fast and reliable stratigraphic results. There are still urgent optimization needs particularly in respect to metal coating systems. In this investigation, radiation of the harmonic wavelengths at 1064, 532, 355 and 266 nm of a nanosecond pulsed Nd:YAG laser were used to ablate a steel sheet galvanically coated with a 20 μm layer of a Ni-Co alloy. Atomic emissions from the resulting plasmas were recorded and converted into stratigrams by the linear correlation coefficient method. For all wavelengths, the average ablation rate as a function of laser fluence, as well as the effective absorption coefficient were determined and compared to predictions based on a simple wavelength-independent heat diffusion model. This study enables a deeper mechanistic understanding and an optimization of a high-precision stratigraphy of metal coating systems. |
| Databáze: | OpenAIRE |
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