Physico-chemical analysis on chemical bonding at adhesion interface between rubber and Pd alloy

Abstract Some spectroscopic analyses were carried out on the adhesive interface layers formed by cure-adhesion of natural rubber to electroless Pd and/or Pd–P alloys. The transmission electron microscopy revealed some clear images of the adhesion layer just at the interface between rubber and electroless-plating films of Pd and/or Pd–P alloys. The content ratio of Pd/S analyzed by energy dispersive X-ray spectroscopy changed gradually along the depth at the rubber–metal interface layer for Pd alloy, but was kept almost constant irrespective of depth for Pd–P alloy.