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Scratching behaviour of polymer films using blunt spherical styli

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Abstract

There are four different kinds of scratch morphologies developed when a blunt spherical stylus is in contact with the surface of a polymer multilayer system in relative motion. Qualitatively, a relationship between scratch morphologies and mechanisms can be established. The main deformation mechanisms are surface shear yielding, surface cracking, subsurface yielding (indentation), and interfacial delamination. Tangential forces during scratching using a blunt spherical stylus are largely due to the friction between materials and the stylus. In that sense, lubricants can improve the material scratch performance by reducing the friction force at a given normal load. Many variables, such as scratching speed, environments, and the sizes of styli, can affect polymer scratching performances to a large degree.

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Author notes

  1. B. Y. Ni

    Present address: Color Printing and Imaging Division, Tektronix, Inc., 26600 S.W. Parkway, P.O. Box 1000, M/S 61-297, 97070, Wilsonville, Oregon, USA

Authors and Affiliations

  1. Materials Science and Engineering Division, Eastman Kodak Company, 14652, Rochester, NY, USA

    B. Y. Ni & A. Le Faou

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  1. B. Y. Ni
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  2. A. Le Faou
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Ni, B.Y., Faou, A.L. Scratching behaviour of polymer films using blunt spherical styli. JOURNAL OF MATERIALS SCIENCE 31, 3955–3963 (1996). https://doi.org/10.1007/BF00352656

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