Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings

Autor: K. Piip, M. Aints, Jukka Kolehmainen, Hugo Mändar, Antti Hakola, Sanna Tervakangas, Indrek Jõgi, Cristian P. Lungu, Corneliu Porosnicu, Peeter Paris, Cristian Ruset, E. Grigore, Matti Laan, J. Kozlova
Rok vydání: 2017
Předmět:
Zdroj: Fusion Engineering and Design
Laan, M, Hakola, A, Paris, P, Piip, K, Aints, M, Jõgi, I, Kozlova, J, Mändar, H, Lungu, C, Porosnicu, C, Grigore, E, Ruset, C, Kolehmainen, J & Tervakangas, S 2017, ' Dependence of LIBS spectra on the surface composition and morphology of W/Al coatings ', Fusion Engineering and Design, vol. 121, pp. 296-300 . https://doi.org/10.1016/j.fusengdes.2017.03.173
ISSN: 0920-3796
DOI: 10.1016/j.fusengdes.2017.03.173
Popis: Laser induced breakdown spectroscopy (LIBS) has been applied to study ITER-relevant coatings with different surface morphology and crystallinity. LIBS elemental depth profiles were compared with those obtained by secondary ion mass spectrometry (SIMS). Depending on surface morphology and crystallinity, the laser ablation rate of the coatings changed by an order of magnitude, the highest ablation rate had samples prepared by thermoionic vacuum discharge. The inclusion of aluminum (proxy for beryllium) increased the ablation rate by a factor of>6. In addition, for W-Al coatings the ablation was non-stoichiometric.
Databáze: OpenAIRE