- Contribution to the Percolation Threshold Study of Silicon Carbide Filled Polydimethylsiloxane Composites Used For Field Grading Application doi link

Auteur(s): Metz R.(Corresp.), Merini Hocine, Reboul Jean-Michel, Bantignies J.-L., Hassanzadeh Mehrdad

(Article) Publié: Silicon, vol. p. (2023)
Texte intégral en Openaccess : openaccess

Ref HAL: hal-04118312_v1
DOI: 10.1007/s12633-023-02424-4
Exporter : BibTex | endNote

Nonlinear V-I characteristics of particulate composite prepared from dispersion of silicon carbide in a siloxane elastomer have been measured as a function of filler concentration up to the maximum allowable of about 32 vol.%. Two critical concentrations (percolation thresholds) are obtained at volume fractions of about 17 and 24 vol.% for low and high electric fields. These values are consistent with the critical concentrations predicted by the theory: 14 and 31 vol.% respectively and may come from edge and face contacts between SiC semi-conducting particles.