Characterization of SiC ceramics with complex porosity by capillary infiltration: Part A - Filling by hexadecane at 20 °C
Idioma
EN
Article de revue
Este ítem está publicado en
Journal of the European Ceramic Society. 2020-05-01, vol. 40, n° 5, p. 1859-1868
Resumen en inglés
The characterization of the porosity of ceramic materials is of prime importance for numerous applications. The work is being presented in two parts: A and B. In this part (Part A), several porous SiC samples ...Leer más >
The characterization of the porosity of ceramic materials is of prime importance for numerous applications. The work is being presented in two parts: A and B. In this part (Part A), several porous SiC samples exhibiting different sizes and porosity spectra were characterizedby capillary infiltration of hexadecane at room temperature.The model materials contain a bimodal pore population generated by cracks and porogens. The monitoring of the weight increase in time for each sample evidence the occurrence of two successive filling stages with specific kinetics, except for the reference samples which contain only one kind of pore. The first kinetic is found clearly larger than the second. A new analytical function was used to identify the transition times and the kinetics of each stage. The various values of the kinetics revealed the occurrence of different infiltration mechanisms. The same model correlates silicon infiltration observations as well (Part B).< Leer menos
Palabras clave en inglés
SiC
Pore characterization
Infiltrationkinetic
Infiltration mechanism
Washburnequation
Centros de investigación