Adhesive interlayers' effect on the entire structure strength of glass molding tools' Pt-Ir coatings by nano-tests determined

► Cr or Ni nano-interlayers on HM glass molding tools improve the film adhesion. ► This enhancement is more significant in the case of a Cr interlayer. ► The effectiveness of the adhesive interlayers depends on their thickness. ► The latter has to be adapted to the substrate roughness Rt.