D. Klein, C. Coddet, University of Technology Belfort-Montbeliard, Belfort Cedex, France; S. Lamy, O. Rapaud, University of Technology Belfort-Montbeliard, Belfort, France; Z. Tosheva, A. Kies, University of Luxembourg, Luxemburg, Luxembourg
This paper presents the development of a non-destructive characterization of permeability applicable to different coatings. Radon, an inert radioactive gas has been used to study the gas transfer process through coatings. The evolution of activity concentration enables the permeation factor to be calculated. Characterization has been performed in gas or / and liquid conditions. It allows studying the transfer of radon through coatings from one medium to another. The analysis of quantity of gas allows studying the gas migration paths correlated with the open porosity, humidity, cracks of coatings. The preliminary results show that this new tool is adapted to carry out measurements in the case of thick and thin coatings.
Summary: This paper presents the development of a non-destructive characterization of permeability applicable to different coatings.
