Abstract

An apparatus is described which has proved of use in the investigation of the adhesion of thin metallic films to glass substrates. A rod is cemented with its axis perpendicular to the surface of the film and a lateral force is applied to the other end of the rod to break the bond. The magnitude of the couple causing film to become detached from the substrate provides a measure of the film adhesion. Tensile stresses in excess of 4 × 107 N m−2 can be obtained.

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