Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-47-Pr6-52
Mechanical behaviour of thin films on substrates : Debonding and bucklingF. Cleymand, C. Coupeau, J. Colin and J. Grilhé
Laboratoire de Métallurgie Physique, UMR 6630, SP2MI, boulevard Pierre et Marie Curie, 86962 Futuroscope cedex, France
In situ atomic force microscopy observations of nickel thin films on substrates under external compressive stresses have been carried out. Straight-sided wrinkles arise perpendicularly to the compression axis above a critical stress and undulations of very low amplitude also appear on these debonding regions. The dependence on stress of the shape of the wrinkles and of the undulations is discussed.
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