Informace o publikaci

Estimating the grade of Mg corrosion using laser-induced breakdown spectroscopy

Logo poskytovatele
Autoři

POŘÍZKA Pavel ROČŇÁKOVÁ Ivana KLUS Jakub PROCHAZKA David SLÁDKOVÁ Lucia ŠPERKA Pavel SPOTZ Zdeněk ČELKO Ladislav NOVOTNÝ Karel KAISER Jozef

Rok publikování 2015
Druh Článek v odborném periodiku
Časopis / Zdroj Journal of Analytical Atomic Spectrometry
Fakulta / Pracoviště MU

Středoevropský technologický institut

Citace
www http://pubs.rsc.org/en/Content/ArticleLanding/2015/JA/C5JA00257E#!divAbstract
Doi http://dx.doi.org/10.1039/c5ja00257e
Obor Fyzika plazmatu a výboje v plynech
Klíčová slova ELEMENTAL ANALYSIS; INDUCED PLASMA; MAGNESIUM BEHAVIOR; LIBS; SPECTROMETRY; ALLOYS; AZ91
Popis We present a report on the potential use of the Laser-Induced Breakdown Spectroscopy (LIBS) technique for direct investigation of Mg corrosion and related optimization of the table-top LIBS system. Moreover, the preliminary study to prove the capability of this LIBS technique for the estimation of corrosion grade is given. In order to simulate the real corrosive environment, Mg samples were prepared in a constant climate chamber. We show that the corrosive layer on the sample surface significantly affects the properties of laser-matter interactions, i.e. among other parameters causing the matrix effect. Consequently, the properties and persistence of laser-induced plasmas (LIPs) and their composition, generated on such degraded surfaces, essentially differ. Collected radiation of LIP is then analysed and ratios of ionic to atomic Mg spectral lines are correlated with the grade of magnesium corrosion, i.e. content of Mg(OH) 2 on the sample surface. The content of Mg(OH) 2 is also correlated with plasma temperature as well as with the electron number density of LIP. Additionally, X-ray diffraction (XRD) analysis and optical profilometry were utilized to obtain more comprehensive information about the degradation grade of high purity Mg samples.
Související projekty:

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info