Application of Laser-Ultrasound for Characterization of Plasma-Sprayed Ceramics

Martin Koller; Hanuš S. Seiner; Petr Sedlák; Jiří Kotlan; Pavel Ctibor; Radek Mušálek; Michal Landa

doi:10.4028/www.scientific.net/DDF.368.69

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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 368Application of Laser-Ultrasound for...

Application of Laser-Ultrasound for Characterization of Plasma-Sprayed Ceramics

Abstract:

Laser-based resonant ultrasound spectroscopy (RUS) method was applied to measure elastic constants of a porous calcium titanate coating manufactured by water-stabilized plasma-spraying (WSP). To enhance the reflectivity of the polished surface of this material for the lasers applied at RUS measurements, a thin coating of sodium metasilicate (waterglass) was used. It is discussed how the metasilicate affects the acoustic properties of the underlying porous material and experimentally shown that such a surface treatment enables the characterization of the structural processes in these materials at elevated temperatures.

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Periodical:

Defect and Diffusion Forum (Volume 368)

Pages:

69-72

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.368.69

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Online since:

July 2016

Authors:

Martin Koller*, Hanuš S. Seiner, Petr Sedlák, Jiří Kotlan, Pavel Ctibor, Radek Mušálek, Michal Landa

Keywords:

Laser-Ultrasound, Plasma Spraying, Porosity, Sodium Metasilicate

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